I had tried binding dynamically created drop down list inside grid view and also added the selected index change event for it but it is giving me output when i had change value of first row drop down. i want individual rows selected index change event what can i do?
I had taken grid view in update panel and added dynamically drop down list in grid view and also bind it for each row.now i want to add selected index change event for each rows drop down list . my code is as follows:-
for (int i = 0; i < gv_details.Rows.Count; i++)
{
DropDownList ddl_Hotel = new DropDownList();
ddl_Hotel.ID = "ddl_Hotel_" + i;
//add TextBox to the first column
string loc = gv_details.Rows[i].Cells[3].Text.ToString();
string selecctloc = "select locid from loc_master where location='" + loc + "'";
SqlDataReader dr = cdf.Execute_SelectForDR(selecctloc);
dr.Read();
string loc_id = dr["locid"].ToString();
dr.Close();
string bind_hotelList = "SELECT Hotel_Id,Hotel_Name FROM Mast_Hotel WHERE LocId ='" + loc_id + "'";
cdf.Bind_DropDownList(ddl_Hotel, bind_hotelList, "Hotel_Name", "Hotel_Id");
//ddl_Hotel.Items.Add(new ListItem("Select", "0"));
ddl_Hotel.Items.Insert(0, new ListItem("---Select---", "0"));
ddl_Hotel.SelectedValue = "0";
gv_details.Columns[5].Visible = true;
ddl_Hotel.SelectedIndexChanged += new EventHandler(ddl_Hotel_SelectedIndexChanged);
this.Form.Controls.Add(ddl_Hotel);
UpdatePanel1.ContentTemplateContainer.Controls.Add(ddl_Hotel);
AsyncPostBackTrigger trigger = new AsyncPostBackTrigger();
trigger.ControlID = ddl_Hotel.ID;
trigger.EventName = "SelectedIndexChanged";
UpdatePanel1.Triggers.Add(trigger);
ddl_Hotel.AutoPostBack = true;
gv_details.Rows[i].Cells[5].Controls.Add(ddl_Hotel);
// ddl_Hotel.Attributes.Add("onchange", "retun destination_name()");
}
please suggest me the answer.
Related
Hello I am taking data from a one datatable that is coming from a session variable and trying to dump some of the data into new datatable however the new datatable returns empty? Empty meaning that there are rows present in the new table. ie., my gridview returns several blank rows?? Not sure what is happening to the string variables?
string date = DateTime.Now.ToShortDateString();
if (Session["MyData"] != null)
{
DataTable dt = new DataTable();
dt = (DataTable)Session["MyData"];
DataTable newdt = new DataTable();
newdt.Columns.Add(new DataColumn("studentName"));
newdt.Columns.Add(new DataColumn("inter"));
newdt.Columns.Add(new DataColumn("CO"));
newdt.Columns.Add(new DataColumn("teacher"));
newdt.Columns.Add(new DataColumn("date"));
newdt.Columns.Add(new DataColumn("desc"));
DataRow newdr;
foreach (DataRow row in dt.Rows)
{
name = row["NM"].ToString();
term = row["term"].ToString();
Mark = row["Mark"].ToString();
period = row["period"].ToString();
CN = row["CN"].ToString();
CO = row["CO"].ToString();
PID = row["PID"].ToString();
//ADD TO NEW TABLE
newdr = newdt.NewRow();
name = newdr["studentName"].ToString();
dlInter.SelectedText = newdr["inter"].ToString();
CO = newdr["CO"].ToString();
teacher = newdr["teacher"].ToString();
date = newdr["date"].ToString();
LabelDescript.Text = newdr["desc"].ToString();
newdt.Rows.Add();
}
Repeater1.DataSource = newdt;
Repeater1.DataBind();
GridView1.DataSource = newdt;
GridView1.DataBind();
This line is your problem:
newdt.Rows.Add();
This will add an EMPTY row because the call to Add() without a DataRow or an object array is interpreted as adding a row without any value.
The solution is simple
newdt.Rows.Add(newdr);
Also the code before the Add is wrong because you are inverting the variables around the equal sign
newdr["studentName"] = name;
newdr["inter"] = dlInter.SelectedText;
newdr["CO"] = CO;
newdr["teacher"] = teacher
newdr["date"] = date;
newdr["desc"] = LabelDescript.Text;
I want to insert an item in drop down list at an index other than 0. I've bound my drop down datavaluefield with identity starting from 1 and want to insert an item on selected value other than 0 to "n", n being any number. Can I get some help?
here's my code:
public void Bind_ddlSelectGroup()
{
using(SqlCommand cmd = new SqlCommand("select g.GroupId, g.GroupName from timeOtime.dbo.[Group] as g where IsDeleted=0", Database.con))
{
using(SqlDataAdapter sda = new SqlDataAdapter(cmd))
{
DataSet ds = new DataSet();
sda.Fill(ds);
ddlSelectGroup.DataSource = null;
ddlSelectGroup.DataSource = ds.Tables[0];
ddlSelectGroup.DataTextField = "GroupName";
ddlSelectGroup.DataValueField = "GroupId";
ddlSelectGroup.DataBind();
}
}
ddlSelectGroup.Items.Insert(0, new ListItem("--Select All Groups--", "0"));
}
I want to insert an item as "--Ungrouped--" in dropdown.
I figured it out. I added the required item("--Ungrouped--") at the bottom of dropdownlist.
ddlSelectGroup.Items.Insert(ddlSelectGroup.Items.Count, new ListItem("--Ungrouped--", "ungrouped"));
it worked fine.
DataTable dtbind = new DataTable();
dtbind = objvehicleBAL.GetTaxdetails();
for (int i = 0; i < dtbind.Rows.Count; i++)
{
DateTime dt1 = DateTime.ParseExact(dtbind.Rows[i]["todate"].ToString(), "dd/MM/yyyy", null);
if (dt1 < ((DateTime.Now.AddDays(15))))
{
GVTax.DataSource = dtbind.Rows[i];
GVTax.DataBind();
}
}
I had written my conditions in if(). I want to bind only satisfied rows in grid. How can I write this?
You do not need to bind the Grid in loop on the Row of data table rather filter the DataTable by the condition you want and bind it once. You can get DataView from the data table and use its property DataView.RowFilter to apply the date filter.
dtbind = objvehicleBAL.GetTaxdetails(); //Filter the record in GetTaxdetails
DataView dv = dtbind.DefaultView; //or use DataView with RowFilter
dv .RowFilter = "todate = #" + DateTime.Now.AddDays(15).ToString() + "#";
GVTax.DataSource = dv;
GVTax.DataBind();
DataTable dtbind1 = objvehicleBAL.GetTaxdetails();
DataTable dtbind2 = new DataTable();
foreach (DataRow row in dtbind1.Rows)
{
DateTime dt1 = DateTime.ParseExact(row["todate"].ToString(), "dd/MM/yyyy", null);
if (dt1 < ((DateTime.Now.AddDays(15))))
dtbind2.Rows.Add(row);
}
}
GVTax.DataSource = dtbind2;
GVTax.DataBind();
No need to bind each row and call DataBind mehtod each time.
Just use the following:
protected void BindGrid()
{
DataTable dtbind = new DataTable();
dtbind=objvehicleBAL.GetTaxdetails();//get the rows filtered in SQL
if(dtbind!=null && dtbind.Rows.Count>0)//always check for null for preventing exception
{
GVTax.DataSource = dtbind;
}
GVTax.DataBind();
}
Hope this helps you!
You can use the Select method of DataTable along with a filtering expression, to get the rows which match your criteria. Then, bind it to to your GridView.
string filterExp = "todate < dateadd(day,15,getdate())";
var filtered = dtBind.Select(filterExp);
GVTax.DataSource = filtered ;
GVTax.DataBind();
You can create another datatable and fill the rows satisfying your condition in the second datatable and bind your gridview with second datatable (having filtered rows)
dttableNew = dttableOld.Clone();
foreach (DataRow drtableOld in dttableOld.Rows)
{
if (/*put some Condition */)
{
dtTableNew.ImportRow(drtableOld);
}
}
GVTax.DataSource = dtTableNew;
GVTax.DataBind();
In following code i am trying to show the latest record on the top of repeater. I also want to include paging in repeater.Paging is done successful in page but i am having trouble when i do sorting in repeater.So my question is this that how can i do sorting and paging in repeater?
My code:
private void Get_Data()
{
String File = Server.MapPath("~/Data/BlogContent.xml");
DataSet ds = new DataSet();
ds.ReadXml(File);
DataView dv = new DataView(ds.Tables[0]);
dv.Sort = "id DESC";
DataTable dt = dv.Table;
ViewState.Add("Mytable", dt);
}
private void Bind_Data(int take, int pageSize)
{
PagedDataSource page = new PagedDataSource();
page.AllowCustomPaging = true;
page.AllowPaging = true;
DataTable dtv = (DataTable)ViewState["Mytable"];
DataView dv = new DataView();
dv = dtv.DefaultView;
dv.Sort = "id ASC";
dv.RowFilter = "id>=" + pageSize + " AND " + "id<=" + take;
page.DataSource = dv;
page.PageSize = psize;
Repeater1.DataSource = page;
Repeater1.DataBind();
if (!IsPostBack)
{
int rowcount = dtv.Rows.Count;
CreatePagingControl(rowcount);
}
}
For paging Check this.Here is full example of paging.link
paging and sorting
** Read the article:
Custom paging in Repeater control in asp.net(C#, VB)**
http://www.webcodeexpert.com/2013/05/custom-paging-in-repeater-control-in.html
Hi
I have created session array :
int[] a = (int[])Session["values"];
Now i have to bind this value to my gridview. I have one column (boundfield in my gridview) in gridview.
I used code to bind array to gridview as follows, but its giving last value only as i want all the values to bind :
for (int i = 0; i < a.Length; i++)
{
str = "select * from Quest_Info where Quest_id='" + a[i] + "' order by Quest_id";
SqlDataAdapter da2 = new SqlDataAdapter(str, sqlconn);
ds2 = new DataSet();
da2.Fill(ds2, "Result");
reviewgrid.DataSource = ds2;
reviewgrid.DataBind();
}
Which code will work for this?
Asp.net, c#
Thank You.
Your code may not work because you are trying to bind gridview in the for loop which keep repeating and will result to bind only one last array id in the end.
You may try to prepare query out front before binding the gridview as example below.
string questIds = string.Empty;
for (int i = 0; i < a.Length; i++)
{
if (questIds.Length > 0)
questIds += ", ";
questIds += a[i];
}
string strSQL = "select * from Quest_Info where Quest_id IN ("+ questIds + ") order by Quest_id";
SqlDataAdapter da2 = new SqlDataAdapter(str, sqlconn);
ds2 = new DataSet();
da2.Fill(ds2, "Result");
reviewgrid.DataSource = ds2;
reviewgrid.DataBind();