I am new to JAVA. I am trying to export Excel through servlet from resultset.
When i am trying to store data in String buffer the it is not actually saving it.
Testfirst.java
String assingee_name = req.getParameter("firstName");
String track_name = req.getParameter("track");
String sla_id = req.getParameter("sla");
StringBuffer sb = new StringBuffer();
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection("jdbc:odbc:Databasethree");
stmt = con.createStatement();
//pw.println("'" +assingee_name + "'");
length = track_name.length();
if (length > 0) {
rs = stmt.executeQuery("SELECT* FROM casedetails where track =" + "'" + track_name + "'");
}
length = sla_id.length();
if (length > 0) {
//rs = stmt.executeQuery("SELECT* FROM casedetails where case_age >"+"'" +sla_id + "'");
rs = stmt.executeQuery("SELECT* FROM cdoscase where Incident_Submit_Fiscal_Year=" + "'" + sla_id + "'");
}
length = assingee_name.length();
if (length > 0) {
rs = stmt.executeQuery("SELECT* FROM casedetails where Assingee_name =" + "'" + assingee_name + "'");
}
pw.println("<html><body>");
pw.println("<H1> CDOS Case Management Version 1.1 </H1>");
pw.println("<Head><style>table,th,td{border:1px solid black;}</style></head>");
pw.println("<table>");
ResultSetMetaData rm = rs.getMetaData();
int clm = rm.getColumnCount();
StringBuffer sb1 = new StringBuffer();
String sb2 = new String();
for (int j = 1; j <= clm; j++) {
sb2 = rm.getColumnName(j);
pw.println("<th>");
pw.println(sb2);
pw.println("</th>");
}
ArrayList Rows = new ArrayList();
ArrayList row = new ArrayList();
Object a = new Object();
int jj = 0; // to find out the number rows
while (rs.next()) {
jj = jj + 1;
pw.println("<tr>");
for (int i = 1; i <= clm; i++) {
//data1[i]=rs.getString(i);
pw.println("<td>");
//pw.println(rs.getObject(i).toString());
pw.println(rs.getString(i));
pw.println("</td>");
sb2.append(rs.getString(i);
//row.add(rs.getString(i));
//sb2=sb2+rs.getObject(i).toString();
}
pw.println("</tr>");
} sb1.append("fd");
//Rows.add(row);
pw.println("Total Records found" + sb1);
pw.println("</table>");
//sb2=sb2+rs.getObject(clm).toString();
//sb1.append(sb2);
//sb1.append(sb2);
a = rs.getString(4).toString();
pw.println("this is data " + a);
pw.println("<p>");
pw.println("<td>Do you want to download report </td>");
req.setAttribute("data", Rows);
pw.println("<input type=\"submit\" name =\"submit1\" value=\"Export To Excel\">");
pw.println("</form>");
} catch (SQLException e) {
pw.println(e.getNextException());
} catch (ClassNotFoundException e) {
pw.println(e.getException());
} finally {
try {
if (rs != null) {
rs.close();
rs = null;
}
if (stmt != null) {
stmt.close();
stmt = null;
}
if (con != null) {
con.close();
con = null;
}
} catch (Exception e) {
pw.close();
}
}
}
Any help on this is highly appreciated.
Thanks,
SR
Related
i wrote two handlers but i need to write now only one handler using switch case how to write i tried but not working. please help me. this is my two handlers code i want that in switch case.please solve this problem
public void ProcessRequest(HttpContext context)
{
string fname = string.Empty;
string ffname = string.Empty;
string m_Result = string.Empty;
DataTable dt = new DataTable();
Guid id = Guid.NewGuid();
if (context.Request.Files.Count > 0)
{
HttpFileCollection files = context.Request.Files;
for (int i = 0; i < files.Count; i++)
{
HttpPostedFile file = files[i];
if (HttpContext.Current.Request.Browser.Browser.ToUpper() == "IE" || HttpContext.Current.Request.Browser.Browser.ToUpper() == "INTERNETEXPLORER")
{
string[] testfiles = file.FileName.Split(new char[] { '\\' });
fname = testfiles[testfiles.Length - 1];
}
else
{
fname = file.FileName;
ffname = "~/Adds_uploads/" + fname;
}
string p = Path.GetFileNameWithoutExtension(fname);
fname = Path.Combine(context.Server.MapPath("~/Adds_uploads/"), p);
file.SaveAs(fname + id + Path.GetExtension(ffname));
string dirName1 = new DirectoryInfo(fname).Name;
FileInfo fInfo = new FileInfo(ffname);
String dirName = fInfo.Directory.Name + '/' + dirName1 + id + Path.GetExtension(ffname);
HttpContext.Current.Response.Write(JsonConvert.SerializeObject(dirName));
//RAID = context.Request.QueryString["RA_ID"].ToString();
//UploadFileToDB(file, RAID);
}
}
}
public bool IsReusable {
get {
return false;
}
}
2nd Handler
public void ProcessRequest(HttpContext context)
{
string fname = string.Empty;
string ffname = string.Empty;
string m_Result = string.Empty;
DataTable dt = new DataTable();
Guid id = Guid.NewGuid();
if (context.Request.Files.Count > 0)
{
HttpFileCollection files = context.Request.Files;
for (int i = 0; i < files.Count; i++)
{
HttpPostedFile file = files[i];
if (HttpContext.Current.Request.Browser.Browser.ToUpper() == "IE" || HttpContext.Current.Request.Browser.Browser.ToUpper() == "INTERNETEXPLORER")
{
string[] testfiles = file.FileName.Split(new char[] { '\\' });
fname = testfiles[testfiles.Length - 1];
}
else
{
fname = file.FileName;
ffname = "~/Fileuploads/" + fname;
}
string p = Path.GetFileNameWithoutExtension(fname);
fname = Path.Combine(context.Server.MapPath("~/Fileuploads/"), p);
file.SaveAs(fname + id + Path.GetExtension(ffname));
string dirName1 = new DirectoryInfo(fname).Name;
FileInfo fInfo = new FileInfo(ffname);
String dirName = fInfo.Directory.Name + '/' + dirName1 + id + Path.GetExtension(ffname);
HttpContext.Current.Response.Write(JsonConvert.SerializeObject(dirName));
//RAID = context.Request.QueryString["RA_ID"].ToString();
//UploadFileToDB(file, RAID);
}
}
}
public bool IsReusable {
get {
return false;
}
}
I think the only difference if the upload path. I would suggest you to pass along another input form the view and then determine the upload path based on that.
i.e
you would have
//for case one
<input type='hidden' name='uploadType' value='files' />
//for case two
<input type='hidden' name='uploadType' value='adds' />
inside your individual file upload forms and then on your action method you can just use
var mappedDirectory = HttpContext.Current.Request.Form["uploadType"].ToString() == "adds" ? "~/Adds_uploads/" : "~/Fileuploads/";
and use this string in your fname construct. So your new method would be like
public void ProcessRequest(HttpContext context)
{
var mappedDirectory = HttpContext.Current.Request.Form["uploadType"].ToString() == "adds" ? "~/Adds_uploads/" : "~/Fileuploads/";
string fname = string.Empty;
string ffname = string.Empty;
string m_Result = string.Empty;
DataTable dt = new DataTable();
Guid id = Guid.NewGuid();
if (context.Request.Files.Count > 0)
{
HttpFileCollection files = context.Request.Files;
for (int i = 0; i < files.Count; i++)
{
HttpPostedFile file = files[i];
if (HttpContext.Current.Request.Browser.Browser.ToUpper() == "IE" || HttpContext.Current.Request.Browser.Browser.ToUpper() == "INTERNETEXPLORER")
{
string[] testfiles = file.FileName.Split(new char[] { '\\' });
fname = testfiles[testfiles.Length - 1];
}
else
{
fname = file.FileName;
ffname = mappedDirectory + fname;
}
string p = Path.GetFileNameWithoutExtension(fname);
fname = Path.Combine(context.Server.MapPath(mappedDirectory), p);
file.SaveAs(fname + id + Path.GetExtension(ffname));
string dirName1 = new DirectoryInfo(fname).Name;
FileInfo fInfo = new FileInfo(ffname);
String dirName = fInfo.Directory.Name + '/' + dirName1 + id + Path.GetExtension(ffname);
HttpContext.Current.Response.Write(JsonConvert.SerializeObject(dirName));
//RAID = context.Request.QueryString["RA_ID"].ToString();
//UploadFileToDB(file, RAID);
}
}
}
I want to display Agendas from table "tblAgenda" using Asp.net here is the query:
public static List<int> SelectByYear()
{
DbManager db = new DbManager();
try
{
List<int> list = new List<int>();
var result = from p in db.tblAgenda
group p by p.News.Value.Year
into g
select new { Year = g.Key, Releases = g };
foreach (var obj in result)
{
list.Add(obj.Year);
}
list.Reverse();
return list.ToList<int>();
}
catch
{
return null;
}
finally
{
db.Dispose();
}
}
and here I am calling the above method:
public partial class edd_Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(Request.QueryString["id"]))
{
RecentData();
}
}
}
private void RecentData()
{
List<tblAgenda> agd = new List<tblAgenda>();
StringBuilder sbHeadings = new StringBuilder();
StringBuilder sbData = new StringBuilder();
List<int> list1 = AgendaManager.SelectByYear();
if (list1 != null)
{
List<int> list = list1.Take(3).ToList<int>();
int Row = 0;
string RowCss = "";
foreach (tblAgenda ob in agd)
{
strYears = "";
if (list.Count > 0)
{
Table tblHead = new Table();
TableRow trHead = new TableRow();
TableCell tcDvHead = new TableCell();
TableCell tcLnkHead = new TableCell();
for (int i = 0; i < list.Count; i++)
{
Row = 0;
List<clsAgenda> listData = new List<clsAgenda>();
listData = null;
DateTime dt = DateTime.Now.AddYears(1);
string stryr = strYears;
int intyr = Convert.ToInt32(list[i]);
diff = Convert.ToInt32(dt.Year) - Convert.ToInt32(intyr);
if (diff == 0 || diff == 1 || diff == 2)
{
if (drpDepartments.SelectedValue == "-1")
{
strYears += list[i] + ",";
sbHeadings.Append("<div id='dv" + list[i] + "' style='float:left;width:60px;cursor:pointer;' class='btnclass11'>" + list[i] + "</div><div style='float:left;'> </div>");
listData = AgendaManager.SelectAllByYear(Convert.ToInt32(list[i]));
}
else
{
if (AgendaManager.IsAgendExistForDeptartment(Convert.ToInt32(list[i]), Convert.ToInt64(drpDepartments.SelectedValue)))
{
strYears += list[i] + ",";
sbHeadings.Append("<div id='dv" + list[i] + "' style='float:left;width:60px;cursor:pointer;' class='btnclass11'>" + list[i] + "</div><div style='float:left;'> </div>");
}
listData = AgendaManager.SelectAllByYear(Convert.ToInt32(list[i]), Convert.ToInt64(drpDepartments.SelectedValue));
}
sbData.Append("<table id='tbl" + list[i] + "' cellspacing='1' cellpadding='4' width='885' style='display:none;margin-top:10px;' class='GridBorder' >");
sbData.Append("<tr class='GridViewHeaderStyle' >");
sbData.Append("<th style='width:380px;height:22px;text-align:left;'>Meeting</th><th style='height:22px;text-align:left;'>Date</th><th style='width:70px;height:22px;text-align:left;'>Time</th><th style='width:70px;height:22px;text-align:left;'>Agenda</th><th style='height:22px;text-align:left;width:120px;'>Web Cast</th><th style='height:22px;text-align:left;width:100px;'>Minutes</th>");
sbData.Append("</tr>");
foreach (clsAgenda obj in listData)
{
RowCss = "";
if (Row == 1)
{
RowCss = "class='GridRow'";
}
sbData.Append("<tr " + RowCss + ">");
sbData.Append("<td >" + obj.Title + "</td>");
sbData.Append("<td >" + string.Format("{0:MMM dd, yyyy}", obj.AgendaDate) + "</td>");
sbData.Append("<td >" + obj.Time + "</td>");
sbData.Append("<td ><a style='color:black;' href='agenda.aspx?id=" + obj.ID + "'>View</a></td>");
if (string.IsNullOrEmpty(obj.WebCast))
{
sbData.Append("<td >---</td>");
}
else
{
sbData.Append("<td ><a style='color:black;' href='" + obj.WebCast + "'>" + obj.WebCastTitle + "</a></td>");
}
if (string.IsNullOrEmpty(obj.MinutesFile))
{
sbData.Append("<td >---</td>");
}
else
{
if (ob.showThroughBroswer == 1)
{
sbData.Append("<td ><a href='downloadfile.aspx?AgendaMinuteId=" + obj.ID + "' target='_blank'>View</a></td>");
}
else
{
sbData.Append("<td ><a href='showpdf.aspx?AgendaMinuteId=" + obj.ID + "' target='_blank'>View</a></td>");
}
}
sbData.Append("</tr>");
Row++;
if (Row == 2)
{
Row = 0;
}
}
sbData.Append("</table>");
}
else
break;
}
if (strYears.Length > 0)
{
strYears = strYears.Substring(0, strYears.Length - 1);
}
strFirstYear = list[0].ToString();
tcDvHead.Text = sbHeadings.ToString();
if (diff == 1 || diff == 2)
{
tcLnkHead.Text = "<div class='dvhrfclass'><a href='listagendas.aspx?id=pre' class='link1'>Previous Meetings >></a></div>";
}
else
{
tcLnkHead.Text = "";
}
trHead.Cells.Add(tcDvHead);
trHead.Cells.Add(tcLnkHead);
tblHead.Rows.Add(trHead);
StringWriter sW = new StringWriter();
HtmlTextWriter hW = new HtmlTextWriter(sW);
tblHead.RenderControl(hW);
letHeading.Text = sW.ToString();
letData.Text = sbData.ToString();
}
}
}
}
now the issue is I am getting no values in list1, I have tried using the debugger on the query and found that I can't access the "tblAgenda", its giving an error that: " Function evaluation disabled because a previous function evaluation timed out. You must continue execution to reenable function evaluation". I have searched alot but didn't find anything good, my connection string is totally fine because all the other tables are working fine even in "tblAgenda" I can store new agenda from admin panel but I can't retrieve the agendas on front end, what is the issue here?
Thanks.
I have two repeater controls one inside other and in inner repeater there is placeholder in which radio button is dynamically generated. I want to find the radio button control to check whether it is checked or not? I want above all function to be performed in button submit/click event defined in the code?
if (!Page.IsPostBack)
{
//1) Load SomeDatatable from Database somehow
// Just for testing : replace with query to DB
strqry = "select * from Quiz_tblQsnsLimitMaster where Qsnexamname='" + Request.QueryString["QsnEname"].ToString() + "'";
SqlDataAdapter adp = new SqlDataAdapter(strqry, sCon);
DataSet ds = new DataSet();
try
{
adp.Fill(ds);
int total = ds.Tables[0].Rows.Count;
for (int i = 0; i < total; i++)
{
string QuesID = ds.Tables[0].Rows[i].ItemArray[1].ToString();
//SubName = ds.Tables[0].Rows[i].ItemArray[3].ToString();
DataSet oDs = SqlHelper.ExecuteDataset(sCon, "Ps_Quiz_OnlineTest_QuestionsWithOptions_Get", QuesID);
SomeDatatable.Merge(oDs.Tables[0]);
}
removeDuplicatesRows(SomeDatatable);
System.Data.DataColumn newColumn = new System.Data.DataColumn("ContentIndex", typeof(System.String));
newColumn.DefaultValue = "0";
SomeDatatable.Columns.Add(newColumn);
for (int i = 0; i < Math.Ceiling((decimal)SomeDatatable.Rows.Count); i++)
SomeDatatable.Rows[i]["ContentIndex"] = i + 1;
}
catch
{
}
////2) Create a dummy data source for the tab repeater using a list of anonymous types
List<object> TabList = new List<object>();
//BindSubject();
for (int I = 0; I < Math.Ceiling((decimal)SomeDatatable.Rows.Count / (decimal)ContentPerTab); I++)
{
TabList.Add(new { TabIndex = I });
}
TabRepeater.ItemDataBound += TabRepeater_ItemDataBound;
TabRepeater.DataSource = TabList;
TabRepeater.DataBind();
//TablLinkRepeater.DataSource = TabList;
//TablLinkRepeater.DataBind();
//}
}
public void removeDuplicatesRows(DataTable dt)
{
SomeDatatable = dt.DefaultView.ToTable(true, "QuestionId");
}
protected void TabRepeater_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item | e.Item.ItemType == ListItemType.AlternatingItem)
{
int TabIndex = -1;
int.TryParse(DataBinder.Eval(e.Item.DataItem, "TabIndex").ToString(), out TabIndex);
//Copy Content Rows from SomeDatable that belong to this tab
DataTable Dt = SomeDatatable.Clone();
for (Int32 i = TabIndex * ContentPerTab; i <= (TabIndex + 1) * ContentPerTab - 1; i++)
{
if (i >= SomeDatatable.Rows.Count) break;
Dt.ImportRow(SomeDatatable.Rows[i]);
}
// Find the content repeater in this item and use the new datatable as source
Repeater ContentRepeater = (Repeater)e.Item.FindControl("ContentRepeater");
ContentRepeater.ItemDataBound += ContentRepeater_ItemDataBound;
ContentRepeater.DataSource = Dt;
ContentRepeater.DataBind();
}
}
// This handler might be needed for content repeater, included just for testing
protected void ContentRepeater_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item | e.Item.ItemType == ListItemType.AlternatingItem)
{
//Read coulmn from Datarow
int ContentIndex = -1;
int.TryParse(DataBinder.Eval(e.Item.DataItem, "ContentIndex").ToString(), out ContentIndex);
var parsed = "'" + HttpUtility.ParseQueryString(DataBinder.Eval(e.Item.DataItem, "QuestionID").ToString()) + "'";
//Add Question
DataSet ds = SqlHelper.ExecuteDataset(sCon, "Ps_Quiz_QuestionsWithOptions_Get", Convert.ToString(parsed));
if (ds.Tables.Count > 0)
{
if (ds.Tables[0].Rows.Count > 0)
{
int iCnt = 0;
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
Table tblQsn = new Table();
//.....Begin Text Qsn Creation.....//
tblQsn.Width = new Unit("98%");
TableRow trQsn = new TableRow();
iRowCounter++;
trQsn.ID = "Row_" + iRowCounter.ToString();
TableCell tcQsn = new TableCell();
TableCell tcQsnSNo = new TableCell();
tcQsn.CssClass = "Label";
tcQsn.BackColor = System.Drawing.Color.Gainsboro;
tcQsn.Font.Bold = true;
tcQsn.Font.Size = 12;
tcQsn.Text = ds.Tables[0].Rows[i][1].ToString();
tcQsn.Width = Unit.Percentage(99.5);
iCellCounter++;
tcQsn.ID = "Cell_" + iCellCounter.ToString();
tcQsnSNo.CssClass = "Label";
tcQsnSNo.Attributes.Add("valign", "top");
tcQsnSNo.BackColor = System.Drawing.Color.Gainsboro;
tcQsnSNo.Font.Bold = true;
tcQsnSNo.Width = Unit.Percentage(0.5);
iCellCounter++;
tcQsnSNo.ID = "Cell_" + iCellCounter.ToString();
iCnt++;
tcQsnSNo.Text = ContentIndex.ToString() + ".";
trQsn.Cells.Add(tcQsnSNo);
trQsn.Cells.Add(tcQsn);
tblQsn.Rows.Add(trQsn);
int rcnt = i;
int iOptCnt = 0;
string sStatus = "N";
while ((rcnt >= 0) && (rcnt < ds.Tables[0].Rows.Count))
{
if (ds.Tables[0].Rows[rcnt][2].ToString() == ds.Tables[0].Rows[i][2].ToString())
{
if (sStatus == "N")
{
sStatus = "Y";
}
TableRow trQsnOpt = new TableRow();
iRowCounter++;
trQsnOpt.ID = "Row_" + iRowCounter.ToString();
TableCell tcQsnOpt = new TableCell();
tcQsnOpt.CssClass = "Label";
iCellCounter++;
tcQsnOpt.ID = "Cell_" + iCellCounter.ToString();
tcQsnOpt.Attributes.Add("valign", "top");
tcQsnOpt.VerticalAlign = VerticalAlign.Middle;
TableCell tcQsnOptSNo = new TableCell();
tcQsnOptSNo.CssClass = "Label";
iCellCounter++;
tcQsnOptSNo.ID = "Cell_" + iCellCounter.ToString();
iOptCnt++;
RadioButton oRbOptions = new RadioButton();
oRbOptions.GroupName = ds.Tables[0].Rows[rcnt][2].ToString() + "_Group";
oRbOptions.Text = ds.Tables[0].Rows[rcnt][3].ToString().Trim();
oRbOptions.Font.Size = 11;
iRbTCounter++;
oRbOptions.ID = ds.Tables[0].Rows[i][0].ToString() + "_" + ds.Tables[0].Rows[rcnt][2].ToString() + "_" + "Option" + iOptCnt.ToString() + "_" + iRbTCounter.ToString();
//oRbOptions.Enabled = false;
//if (ds.Tables[0].Rows[i][2].ToString() == "Option" + iRbTCounter.ToString())
//{
// oRbOptions.Checked = true;
//}
oRbOptions.InputAttributes.Add("data-info", Convert.ToString(ContentIndex));
oRbOptions.CssClass = "Label";
tcQsnOpt.Controls.Add(oRbOptions);
tcQsnOptSNo.Text = iOptCnt.ToString() + ".";
trQsnOpt.Cells.Add(tcQsnOptSNo);
trQsnOpt.Cells.Add(tcQsnOpt);
rcnt++;
//.....Add Option Image.....//
tblQsn.Rows.Add(trQsnOpt);
}
else
break;
}
i = rcnt - 1;
PlPreview = (PlaceHolder)e.Item.FindControl("PlPreview");
PlPreview.Controls.Add(tblQsn);
}
}
}
}
}
protected void btnsubmit_Click(object sender, EventArgs e)
{
SubmitQuestion();
}
public void SubmitQuestion()
{
for (int c = 0; c < SomeDatatable.Rows.Count; c++)
{
string sQsnOptId = SomeDatatable.Rows[c]["QuestionID"].ToString();
DataSet ds = SqlHelper.ExecuteDataset(sCon, "Ps_Quiz_QuestionsWithOptions_Get", "'" + sQsnOptId + "'");
for (int i = 1; i <= 4; i++)
{
string rdboption = ds.Tables[0].Rows[c][0].ToString() + "_" + ds.Tables[0].Rows[i-1][2].ToString() + "_" + "Option" + i + "_" + i;
Repeater rpt = (Repeater)TabRepeater.NamingContainer.FindControl("ContentRepeater");
RadioButton rbt = (RadioButton)rpt.NamingContainer.FindControl(rdboption);
if (rbt.Checked)
{
strqry = "update Quiz_tblOnlineTest_Detail set UserAns='Option" + i + "', DeletionStatus='A' where CreationLogInId='AMITSAMBYAL#HOTMAIL.COM' and ExamName='" + Request.QueryString["QsnEname"].ToString() + "' and QsnId=" + Session["quesid"].ToString() + "";
cmd = new SqlCommand(strqry, con);
try
{
cmd.ExecuteNonQuery();
}
catch
{
}
finally
{
con.Close();
}
break;
}
}
}
}
}
I found the answer. Thanks
foreach (RepeaterItem repeater in TabRepeater.Items)
{
Repeater repeater1 = (Repeater)repeater.FindControl("ContentRepeater");
foreach (RepeaterItem repItem in repeater1.Items)
{
for (int i = 1; i <= 4; i++)
{
string rdboption = ds.Tables[0].Rows[c][0].ToString() + "_" + ds.Tables[0].Rows[i - 1][2].ToString() + "_" + "Option" + i + "_" + i;
PlaceHolder PlPreview = (PlaceHolder)repItem.FindControl("PlPreview");
rbt = (RadioButton)PlPreview.FindControl(rdboption);
if (rbt.Checked)
{
// statement
}
}
}
}
}
}
I download an Excel Sheet by using the following code.
The above code is starting code of my logic.After downloaded, I open the Excel Sheet.It shows an Warning like this
Because of this warning,when Im trying to upload the same page to Mysql DataBase using Asp.Net.It shows an Exception like "Page is not in correct Format".
This Is My Entire Logic For Downloading an Excel Sheet
protected void download_Click(object sender, EventArgs e)
{
ExportToExcel(SqlDataSource1, "StudentMarks");
}
public void ExportToExcel(SqlDataSource dataSrc, string fileName)
{
//Add Response header
Response.Clear();
Response.AddHeader("content-disposition", string.Format("attachment;filename={0}.xls", fileName));
Response.Charset = "";
Response.ContentType = "application/ms-excel";
//GET Data From Database
MySqlConnection cn = new MySqlConnection(dataSrc.ConnectionString);
// string query = dataSrc.SelectCommand.Replace("\r\n", " ").Replace("\t", " ");
MySqlCommand cmd9 = new MySqlCommand("select subject from class_subject where standard='" + DropDownList1.SelectedItem.Value + "';", cn);
// cn.Open();
//DataSet ds9=new DataSet();
MySqlDataAdapter da9 = new MySqlDataAdapter(cmd9);
// da9.Fill(ds9);
DataTable dt = new DataTable();
da9.Fill(dt);
StringBuilder sb9 = new StringBuilder();
for (int count = 0; count < dt.Rows.Count; count++)
{
// string headerRowText = GridView4.HeaderRow.Cells[i].Text;
sb9.Append("'");
sb9.Append(dt.Rows[count][0].ToString());
sb9.Append("'");
if (count < dt.Rows.Count - 1)
//if (count < count3 - 1)
{
sb9.Append(",");
}
}
Label2.Text = sb9.ToString();
//MySqlCommand fyearcmd = new MySqlCommand("select fyear from student_data where standard='" + DropDownList1.SelectedItem.Value + "' and completed_status='running';", cn);
//MySqlDataReader fyeardr = fyearcmd.ExecuteReader();
string query = "select Admission_Num,Name,'Standard','Fyear','Type_of_exam'," + sb9.ToString() + " from student_data where standard='" + DropDownList1.SelectedItem.Value + "' and fyear='" + DropDownList4.SelectedItem.Value + "';";
MySqlCommand cmd = new MySqlCommand(query, cn);
cmd.CommandTimeout = 999999;
cmd.CommandType = CommandType.Text;
try
{
cn.Open();
MySqlDataReader dr = cmd.ExecuteReader();
StringBuilder sb = new StringBuilder();
//Session["fieldcount"] = dr.FieldCount.ToString();
//Label1.Text = dr.FieldCount.ToString();
//Add Header
int count3 = 4;
for (int count = 0; count < dr.FieldCount; count++)
//for (int count = 0; count < count3; count++)
{
if (dr.GetName(count) != null)
sb.Append(dr.GetName(count));
if (count < dr.FieldCount - 1)
//if (count < count3 - 1)
{
sb.Append("\t");
}
}
Response.Write(sb.ToString() + "\n");
Response.Flush();
//Append Data
while (dr.Read())
{
sb = new StringBuilder();
//for (int col = 0; col < dr.FieldCount - 1; col++)
for (int col = 0; col <= count3; col++)
{
if (col < (count3 - 2))
{
if (!dr.IsDBNull(col))
sb.Append(dr.GetValue(col).ToString().Replace(",", " "));
sb.Append("\t");
}
if (col == (count3 - 2))
{
if (!dr.IsDBNull(col))
sb.Append(DropDownList1.SelectedItem.Text);
sb.Append("\t");
}
if (col == (count3 - 1))
{
if (!dr.IsDBNull(col))
{
//sb.Append(dr.GetValue(col).ToString().Replace(",", " "));
sb.Append(DropDownList4.SelectedItem.Text);
}
sb.Append("\t");
}
if (col == count3)
{
if (!dr.IsDBNull(col))
{
//sb.Append(dr.GetValue(col).ToString().Replace(",", " "));
sb.Append(DropDownList3.SelectedItem.Text);
}
sb.Append("\t");
}
}
//if (!dr.IsDBNull(dr.FieldCount - 1))
// sb.Append(dr.GetValue(dr.FieldCount - 1).ToString().Replace(",", " "));
Response.Write(sb.ToString() + "\n");
Response.Flush();
}
dr.Dispose();
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
finally
{
cmd.Connection.Close();
cn.Close();
}
Response.End();
}
So Please give me the suggestion how to download the Excel Sheet with out showing errors while opening.
You you are generating a csv file, not a excel file. Try to change you header:
Response.ContentType = "text/csv";
Response.AddHeader("Content-Disposition", "attachment;filename=myfilename.csv");
Normally excel is default for opening csv files.
I have developed an asp.net application in which input will be given through an excel sheet.
This application is working fine in a system with WINDOWS XP and MS office 2008.
If i try to run the same application in a system with WINDOWS 7 and MS office 2010 i am getting a Argument Null Exception.
Code:
foreach (var dr in data)
{
LHSupdate = new LHSUpdate();
if (!string.IsNullOrEmpty(Convert.ToString(dr["Associate Id"])))
{
AssociateID = Convert.ToString(dr["Associate Id"]);
}
LHSupdate.AssciateID = AssociateID;
if (!string.IsNullOrEmpty(Convert.ToString(dr["Associate Name"])))
{
AssociateName = Convert.ToString(dr["Associate Name"]);
}
LHSupdate.Name = AssociateName;
var designation = dsData.Tables["LHS"].AsEnumerable().Where(r => Convert.ToString(r["Associate Id"]).Trim() == LHSupdate.AssciateID.Trim());
if (designation != null)
{
foreach (var de in designation)
{
LHSupdate.Designation = Convert.ToString(de["Level"]);
}
}
else
{
LHSupdate.Designation = "";
}
LHSupdate.CourseName = Convert.ToString(dr["Trainings "]);
LHSupdate.CourseStatus = Convert.ToString(dr["Training Status"]);
LHSupdate.Score = Convert.ToString(dr["Credits"]);
LHSupdate.LearningMode = Convert.ToString(dr["Venue"]);
LHSupdate.StartDate = Convert.ToString(dr["Start Date"]);
LHSupdate.EndDate = Convert.ToString(dr["End Date"]);
lstLHS.Add(LHSupdate);
}
I am getting error in the line:
var designation = dsData.Tables["LHS"].AsEnumerable().Where(r => Convert.ToString(r["Associate Id"]).Trim() == LHSupdate.AssciateID.Trim());
Code:
private DataSet Getdata()
{
string connectionString = "";
string getExcelSheetName = string.Empty;
if (fuLHSEntry.HasFile)
{
string fileName = Path.GetFileName(fuLHSEntry.PostedFile.FileName);
string fileExtension = Path.GetExtension(fuLHSEntry.PostedFile.FileName);
string fileLocation = Server.MapPath("~/App_Data/" + fileName);
fuLHSEntry.SaveAs(fileLocation);
if (fileExtension == ".xls")
{
connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileLocation + #";Extended Properties=" + Convert.ToChar(34).ToString() + #"Excel 8.0;Imex=1;HDR=Yes;" + Convert.ToChar(34).ToString();
}
else if (fileExtension == ".xlsx" || fileExtension == ".xlsm")
{
connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileLocation + #";Extended Properties=" + Convert.ToChar(34).ToString() + #"Excel 12.0;IMEX=2;HDR=Yes;" + Convert.ToChar(34).ToString();
}
OleDbConnection con = new OleDbConnection(connectionString);
OleDbCommand cmd = new OleDbCommand();
cmd.CommandType = System.Data.CommandType.Text;
cmd.Connection = con;
OleDbDataAdapter dAdapter = new OleDbDataAdapter(cmd);
DataTable dtExcelRecords = new DataTable();
con.Open();
DataTable dtExcelSheetName = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
int count = 0;
foreach (DataRow dr in dtExcelSheetName.Rows)
{
getExcelSheetName = GetSheetName(dr);
if (!string.IsNullOrEmpty(getExcelSheetName))
{
cmd.CommandText = "SELECT * FROM [" + getExcelSheetName + "]";
dAdapter.SelectCommand = cmd;
if (getExcelSheetName.ToUpper().Contains("LEARNING"))
{
getExcelSheetName = "LEARNING";
}
else
{
getExcelSheetName = "LHS";
}
dAdapter.Fill(dsData, getExcelSheetName);
count++;
if (count == 2)
{
break;
}
}
}
con.Close();
}
return dsData;
}
Please help me in resolving this issue.
Thanks,
Raji
From your code it appears that the table can have two possible names.
Either give it always the same name that you're using later when reading:
dAdapter.Fill(dsData, "LHS");
Or you can take the table by index ignoring its name altogether:
var designation = dsData.Tables[0].AsEnumerable().Where(r => Convert.ToString(r["Associate Id"]).Trim() == LHSupdate.AssciateID.Trim());