I am trying to display a grid if the user entered register number exists in database, if the register number does not exists this means that I need to display one label also.i am a new one in asp.net,so please help me.
Here is my code below.
public DataTable madhrasaViewByRegNo(string viewByNo)
{
try
{
madhrasaInfo infomadhrasa = new madhrasaInfo();
object decobj = new object();
if (sqlcon.State == ConnectionState.Closed)
{
sqlcon.Open();
}
SqlCommand sqlcmd = new SqlCommand("madhrasaViewByRegNo", sqlcon);
sqlcmd.CommandType = CommandType.StoredProcedure;
sqlcmd.Parameters.Add("#regNo", SqlDbType.VarChar).Value = viewByNo;
decobj = sqlcmd.ExecuteNonQuery();
if (decobj == null)
{
decStuId = decimal.Parse(decobj.ToString());
}
else
{
DataTable dtbClass = new DataTable();
SqlDataAdapter sqlda = new SqlDataAdapter("madhrasaViewByRegNo", sqlcon);
sqlda.SelectCommand.CommandType = CommandType.StoredProcedure;
sqlda.SelectCommand.Parameters.Add("#regNo", SqlDbType.VarChar).Value = viewByNo;
sqlda.Fill(dtbClass);
return dtbClass;
}
}
catch (Exception)
{
throw;
}
return null;
}
public void gridfillByNo()
{
madhrasaSp spMadhrasa = new madhrasaSp();
DataTable dtbl = new DataTable();
dtbl = spMadhrasa.madhrasaViewByRegNo(TextBox2.Text);
gvstuResult.DataSource = dtbl;
gvstuResult.DataBind();
}
public void regSearch()
{
madhrasaSp spmadhrasa = new madhrasaSp();
spmadhrasa.madhrasaViewByRegNo(TextBox2.Text);
if (madhrasaSp.decStuId > 0)
{
gridfillByNo();
MultiView1.ActiveViewIndex = 1;
}
else
{
MultiView1.ActiveViewIndex = 0;
Label1.Visible = true;
Label1.Text = "Invalid Register Number";
}
}
protected void Button2_Click(object sender, EventArgs e)
{
regSearch();
}
You Dont you just set the grid view's EmptyDataText to 'Reg No Dosent exist'. It will solve your ploblem.
<asp:GridView ID="GridView1" runat="server" EmptyDataText="register number not available">
</asp:GridView>
Related
I am struggling a bit to populate my dropdown list, can anybody tell me where I am going wrong?
ASPX CODE it keeps looping after getting the connection string - back into the connection string method.
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindDropDownList();
}
}
private string GetConnectionString()
{
using (DataManager dmgr = new DataManager())
{
dmgr.Connect(ConfigurationManager.AppSettings["ProductionKey"]);
return BindDropDownList();
}
}
public string BindDropDownList()
{
DataTable dt = new DataTable();
SqlConnection connection = new SqlConnection(GetConnectionString());
try
{
connection.Open();
string sqlStatement = "SELECT * FROM Itemseriesmaster";
SqlCommand sqlCmd = new SqlCommand(sqlStatement, connection);
SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd);
sqlDa.Fill(dt);
if (dt.Rows.Count > 0)
{
DropDownList1.DataSource = dt;
DropDownList1.DataTextField = "Description"; // the items to be displayed in the list items
DropDownList1.DataValueField = "ID"; // the id of the items displayed
DropDownList1.DataBind();
}
}
catch (SqlException ex)
{
string msg = "Fetch Error:";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
connection.Close();
}
return AppRelativeTemplateSourceDirectory;
}
DataManager Code - where the code calls into
public DataSet ItemSeriesMaster(int id, string description)
{
object[] args = new object[2] { id, description };
return CallSp(MethodBase.GetCurrentMethod(), args) as DataSet; // i know this is not an sp call.. just testing
}
}
}
I am trying to go to my database and bring out the list.
I'm attempting to add details from one gridview to another gridview on the same page; however I'm not see the gridview (not visible). Not sure exactly what is causing that because visible is set to true in properties window.
protected void btnAssign_Click(object sender, EventArgs e)
{
DataRow drow;
DataTable dt = SetDataTable();
drow = dt.NewRow();
//GridView1.Rows.Add(1);
int row = GridView1.Rows.Count - 1;
drow["Customer Name"] = GridView1.Rows[row].Cells[0].Text;
drow["Invoice #"] = GridView1.Rows[row].Cells[1].Text;
drow["Invoice Qty"] = GridView1.Rows[row].Cells[2].Text;
//drow["Salary"] = textBox4.Text.Trim();
dt.Rows.Add(drow);
BindGrid(dt);
btnDelete.Visible = true;
}
private DataTable SetDataTable()
{
DataTable dt = new DataTable();
try
{
DataColumn dcol = new DataColumn("Customer Name", typeof(System.String));
dt.Columns.Add(dcol);
dcol = new DataColumn("Invoice #", typeof(System.String));
dt.Columns.Add(dcol);
dcol = new DataColumn("Invoice Qty", typeof(System.String));
dt.Columns.Add(dcol);
}
catch (Exception ex)
{
}
return dt;
}
private void BindGrid(DataTable dt)
{
try
{
if (dt.Rows.Count > 0)
{
GridView2.DataSource = dt;
}
else { }
}
catch (Exception ex)
{
}
}
Hi Friends i have created a single asp.net page(c#) with multiple grid view to display records. I have multiple command button to show records in these grid.
I am using single button to clear the row selection in grid but it is not working.
Please help me...
protected void btnClearGridSelection_Click(object sender, EventArgs e)
{
if (GridView1.Visible == true)
{
GridView1.SelectedIndex = -1;
}
if (GridView1.Visible == true)
{
GridViewSearch.SelectedIndex = -1;
}
if (GridView1.Visible == true)
{
GridViewState.SelectedIndex = -1;
}
if (GridView1.Visible == true)
{
GridViewDistrict.SelectedIndex = -1;
}
if (GridView1.Visible == true)
{
GridViewType.SelectedIndex = -1;
}
if (GridView1.Visible == true)
{
GridViewEmployee.SelectedIndex = -1;
}
}
//---------------------updating my question with new problem-------------
Now i am able to to clear the selection from row but facing new problem.......When i am clicking on show(to show results state wise) button it is showing results and also clearing the selection when clicking on clear selection button with no problems....but when i click on another show button(to show results district wise) to show results it is showing results but when i select the row and click on clear selection button it is showing both grid with records......please help how to hide state Grid when i am Clicking on Clear Selection Button while using District grid......i am posting the code which i am using on Button Click....
.......clear selection....Button click:
protected void btnClearGridSelection_Click(object sender, EventArgs e)
{ GridView1.SelectedIndex = -1;
GridViewSearch.SelectedIndex = -1;
GridViewState.SelectedIndex = -1;
GridViewDistrict.SelectedIndex = -1;
GridViewType.SelectedIndex = -1;
GridViewEmployee.SelectedIndex = -1;
}
.......State Grid....Button click:
protected void btnState_Click(object sender, EventArgs e)
{
GridView1.Visible = false;
//GridViewState.Visible = true;
GridViewDistrict.Visible = false;
GridViewSearch.Visible = false;
GridViewType.Visible = false;
GridViewEmployee.Visible = false;
btnClearGridSelection.Visible = true;
string d2 = ddlState.Text;
string strquery = "select * from tblAsset2 where v_State=#d2";
if (con.State != ConnectionState.Closed)
{
con.Close();
}
con.Open();
try
{
SqlCommand cmd = new SqlCommand(strquery, con);
cmd.Parameters.AddWithValue("#d2", d2);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
GridViewState.DataSource = ds;
GridViewState.DataBind();
int rowCount = GridViewState.Rows.Count;
if (rowCount <= 0)
{
Label67.Visible = true;
GridViewState.Visible = false;
Label67.Text = "Sorry!....Records not found.";
}
else
{
GridViewState.Visible = true;
Label67.Visible = false;
}
}
catch (Exception ex)
{
Response.Write(ex);
}
finally
{
con.Close();
}
}
....................District Grid....Button click:
protected void btnDistrict_Click(object sender, EventArgs e)
{
GridView1.Visible = false;
GridViewDistrict.Visible = false;
//GridViewDistrict.Visible = true;
GridViewSearch.Visible = false;
GridViewType.Visible = false;
GridViewEmployee.Visible = false;
btnClearGridSelection.Visible = true;
string d2 = ddlDistrict.Text;
string strquery = "select * from tblAsset2 where v_District=#d2";
if (con.State != ConnectionState.Closed)
{
con.Close();
}
con.Open();
try
{
SqlCommand cmd = new SqlCommand(strquery, con);
cmd.Parameters.AddWithValue("#d2", d2);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
GridViewDistrict.DataSource = ds;
GridViewDistrict.DataBind();
int rowCount = GridViewDistrict.Rows.Count;
if (rowCount <= 0)
{
Label67.Visible = true;
GridViewDistrict.Visible = false;
Label67.Text = "Sorry!....Records not found.";
}
else
{
GridViewDistrict.Visible = true;
Label67.Visible = false;
}
}
catch (Exception ex)
{
Response.Write(ex);
}
finally
{
con.Close();
}
}
I resolved my problem and it may help someone else so i am posting it.. i have written wrong line:- GridViewState.Visible = true; // i have commented this line and error gone
protected void GridViewState_RowCreated(object sender, GridViewRowEventArgs e)
{
GridViewState.Visible = true; // i have commented this line and error gone
}
I'm designing a web system for my fyp.
I use SqlDependency to get table change info from cache.
I used SqlDataAdapter, dataSet and gridview, but it doesn't show any result on screen.
Can you tell me where the problem is in my code?
protected void refresh_Click(object sender, EventArgs e)
{
if (Cache["shipOrders"] == null)
{
gvshipOrders.DataSource = Cache["shipOrders"];
gvshipOrders.DataBind();
lblOrderNotification.Text = "last order recived at " + DateTime.Now.ToString();
}
else
{
string xconnectionString = ConfigurationManager.ConnectionStrings["LGDB"].ToString();
SqlConnection sqlCon = new SqlConnection(xconnectionString);
SqlDataAdapter da = new SqlDataAdapter("viewOrders", sqlCon);
DataSet ds = new DataSet();
da.Fill(ds);
SqlCacheDependency XsqlcacheDependecy = new SqlCacheDependency("secaloTest1", "customerShipOrder");
//caching shipOrders table data
/*
Cache.Insert("shipOrders", ds, null, DateTime.Now.AddSeconds(60), Cache.NoSlidingExpiration, CacheItemPriority.Default, null);
another overloaded method is used */
Cache.Insert("shipOrders", ds, XsqlcacheDependecy);
gvshipOrders.DataSource = ds;
gvshipOrders.DataBind();
lblOrderNotification.Text = "orders retrived from database at " + DateTime.Now.ToString();
}
}
I've found the problem,
public partial class OrderProccessing : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Session["email"] == null)
{
Response.Redirect("Default.aspx");
}
else
{
string value = Session["email"].ToString();
Classes.AddAddress addcuid = new Classes.AddAddress(value);
txtstaffname.Text = addcuid.addStaffName().ToString();
txtstaffID.Text = addcuid.fetchStaffID().ToString();
}
}
protected void refresh_Click(object sender, EventArgs e)
{
if (Cache["shipOrders"] != null)
{
myGrid.DataSource = Cache["ShipOrders"];
myGrid.DataBind();
lblOrderNotification.Text = "last order recived at " + DateTime.Now.ToString();
}
else
{
string xconnectionString = ConfigurationManager.ConnectionStrings["LGDB"].ToString();
SqlConnection sqlCon = new SqlConnection(xconnectionString);
SqlDataAdapter da = new SqlDataAdapter("viewOrders", sqlCon);
da.SelectCommand.CommandType = CommandType.StoredProcedure;
DataSet ds = new DataSet();
da.Fill(ds);
SqlCacheDependency XsqlcacheDependecy = new SqlCacheDependency("secaloTest1", "customerShipOrder");
//caching shipOrders table data
/*
Cache.Insert("shipOrders", ds, null, DateTime.Now.AddSeconds(60), Cache.NoSlidingExpiration, CacheItemPriority.Default, null);
another overloaded method is used */
Cache.Insert("shipOrders", ds, XsqlcacheDependecy);
myGrid.DataSource = ds;
myGrid.DataBind();
lblOrderNotification.Text = "orders retrived from database at " + DateTime.Now.ToString();
}
}
}
I am trying to update a gridview on asp.net using a stored procedure but it always resets to the original values. What am I doing wrong?
edit: all page code added now
protected void page_PreInit(object sender, EventArgs e)
{
MembershipUser UserName;
try
{
if (User.Identity.IsAuthenticated)
{
// Set theme in preInit event
UserName = Membership.GetUser(User.Identity.Name);
Session["UserName"] = UserName;
}
}
catch (Exception ex)
{
string msg = ex.Message;
}
}
protected void Page_Load(object sender, EventArgs e)
{
userLabel.Text = Session["UserName"].ToString();
SqlDataReader myDataReader = default(SqlDataReader);
SqlConnection MyConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["RescueAnimalsIrelandConnectionString"].ConnectionString);
SqlCommand command = new SqlCommand("sp_EditRescueDetails", MyConnection);
if (!User.Identity.IsAuthenticated)
{
}
else
{
command.Parameters.AddWithValue("#UserName", userLabel.Text.Trim());
}
try
{
command.CommandType = CommandType.StoredProcedure;
MyConnection.Open();
myDataReader = command.ExecuteReader(CommandBehavior.CloseConnection);
// myDataReader.Read();
GridViewED.DataSource = myDataReader;
GridViewED.DataBind();
if (GridViewED.Rows.Count >= 1)
{
GridViewED.Visible = true;
lblMsg.Visible = false;
}
else if (GridViewED.Rows.Count < 1)
{
GridViewED.Visible = false;
lblMsg.Text = "Your search criteria returned no results.";
lblMsg.Visible = true;
}
MyConnection.Close();
}
catch (SqlException SQLexc)
{
Response.Write("Read Failed : " + SQLexc.ToString());
}
}
//to edit grid view
protected void GridViewED_RowEditing(object sender, GridViewEditEventArgs e)
{
GridViewED.EditIndex = e.NewEditIndex;
}
protected void GridViewED_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
SqlConnection MyConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["RescueAnimalsIrelandConnectionString"].ConnectionString);
SqlCommand command = new SqlCommand("sp_UpdateRescueDetails", MyConnection);
if (!User.Identity.IsAuthenticated)
{
}
else
{
command.Parameters.AddWithValue("#UserName", userLabel.Text.Trim());
command.Parameters.Add("#PostalAddress", SqlDbType.VarChar).Value = ((TextBox)GridViewED.Rows[e.RowIndex].Cells[0].Controls[0]).Text;
command.Parameters.Add("#TelephoneNo", SqlDbType.VarChar).Value = ((TextBox)GridViewED.Rows[e.RowIndex].Cells[1].Controls[0]).Text;
command.Parameters.Add("#Website", SqlDbType.VarChar).Value = ((TextBox)GridViewED.Rows[e.RowIndex].Cells[2].Controls[0]).Text;
command.Parameters.Add("#Email", SqlDbType.VarChar).Value = ((TextBox)GridViewED.Rows[e.RowIndex].Cells[3].Controls[0]).Text;
}
command.CommandType = CommandType.StoredProcedure;
MyConnection.Open();
command.ExecuteNonQuery();
MyConnection.Close();
GridViewED.EditIndex = -1;
}
I suspect the code loading the grid is being invoked upon postback, which is causing the data to be pulled from the database when you don't want it to.
Yes - I think you want the code to only load if it is not a postback. You can use the Page.IsPostBack property for this.
Something like this:
protected void Page_Load(object sender, EventArgs e)
{
userLabel.Text = Session["UserName"].ToString();
if (!IsPostBack) {
SqlDataReader myDataReader = default(SqlDataReader);
SqlConnection MyConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["RescueAnimalsIrelandConnectionString"].ConnectionString);
SqlCommand command = new SqlCommand("sp_EditRescueDetails", MyConnection);
if (!User.Identity.IsAuthenticated)
{
}
else
{
command.Parameters.AddWithValue("#UserName", userLabel.Text.Trim());
}
try
{
command.CommandType = CommandType.StoredProcedure;
MyConnection.Open();
myDataReader = command.ExecuteReader(CommandBehavior.CloseConnection);
// myDataReader.Read();
GridViewED.DataSource = myDataReader;
GridViewED.DataBind();
if (GridViewED.Rows.Count >= 1)
{
GridViewED.Visible = true;
lblMsg.Visible = false;
}
else if (GridViewED.Rows.Count < 1)
{
GridViewED.Visible = false;
lblMsg.Text = "Your search criteria returned no results.";
lblMsg.Visible = true;
}
MyConnection.Close();
}
catch (SqlException SQLexc)
{
Response.Write("Read Failed : " + SQLexc.ToString());
}
}
}
Don't bind your data in the Page_Load event. Create a separate method that does it, then in the Page Load, if !IsPostback, call it.
The reason to perform the databinding is it's own method is because you'll need to call it if you're paging through the dataset, deleting, updating, etc, after you perform the task. A call to a method is better than many instances of the same, repetitive, databinding code.