ASP.NET - How to populate item template from datatable into gridview

You need to handle the Item_databound event, there find the control id using e.row.findcontrol method then bind the values

Here are the example

http://msdn.microsoft.com/en-us/library/aa479353.aspx
And

http://msdn.microsoft.com/en-us/library/bb288032.aspx

thanks for reply
But I have ItemTemplate inside Gridview not databound field ok.
So. First I check data into table if exist then I fetch data into dt1 (datatable). From this dt1 I want to populate data into gridview

Did you checked this link?

http://msdn.microsoft.com/en-us/library/aa479353.aspx

<Columns>
        <asp:BoundField HeaderText="Last" DataField="LastName" 
           SortExpression="LastName"></asp:BoundField>
        <asp:BoundField HeaderText="First" DataField="FirstName" 
           SortExpression="FirstName"></asp:BoundField>
        <asp:BoundField HeaderText="Hire Date" DataField="HireDate" 
           SortExpression="HireDate"
            DataFormatString="{0:d}"></asp:BoundField>
        <asp:TemplateField HeaderText="Seniority">
            <ItemTemplate>
                <%# ComputeSeniorityLevel(DateTime.Now – 
                     (DateTime)Eval("HireDate")) %>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>

Check the highlighted area, there HireDate is bounded using database only

Pls see my code
It bind data into gridview but same record in all rows why?...

protected void GrvMfdetails_RowDataBound(object sender, GridViewRowEventArgs e)
        {
DropDownList ddlGrvFromStn = (DropDownList)e.Row.Cells[0].FindControl("ddlGrvFromStn");
            DropDownList ddlGrvTooStn = (DropDownList)e.Row.Cells[4].FindControl("ddlGrvTooStn");
            BLL bll = new BLL();
            ddlGrvFromStn.DataSource = bll.GettingStation();
            ddlGrvFromStn.DataValueField = "CODE_NAME".ToString();
            ddlGrvFromStn.DataTextField = "CODE_NAME".ToString();
            ddlGrvFromStn.DataBind();
            ddlGrvTooStn.DataSource = bll.GettingStation2();
            ddlGrvTooStn.DataValueField = "CODE_NAME".ToString();
            ddlGrvTooStn.DataTextField = "CODE_NAME".ToString();
            ddlGrvTooStn.DataBind();
DataTable dt = (DataTable)ViewState["Myview"];
                                if (dt.Rows.Count > 0)
                                {
for(int i=0;i<dt.count:i++)
{
 var ddlGrvFromStnn = (DropDownList)e.Row.FindControl("ddlGrvFromStn");
                            var txtcnmt = (TextBox)e.Row.FindControl("txtCnmt");
                            var txtPkg = (TextBox)e.Row.FindControl("txtPkg");
                            var txtweight = (TextBox)e.Row.FindControl("txtweight");
                            var ddlGrvTooStnn = (DropDownList)e.Row.FindControl("ddlGrvTooStn");
                            var txtFreight = (TextBox)e.Row.FindControl("txtFreight");
                            var txtGoods = (TextBox)e.Row.FindControl("txtGoods");
                            var txtPM = (TextBox)e.Row.FindControl("txtPM");
                            var txt12 = (TextBox)e.Row.FindControl("txt12");

This is wrong method of binding.

When you call the Gridview.Bind Method, then the gridview will be loaded with values one by one.

GrvMfdetails_RowDataBound will be fired for each rows in the DataTable dt. And also you have check either it is header row , datarow or footer row.

Something like

protected void GrvMfdetails_RowDataBound(object sender, GridViewRowEventArgs e)
      {

       if(e.Row.RowType == DataControlRowType.DataRow)
       {

        DropDownList ddlGrvFromStn = (DropDownList)e.Row.Cells[0].FindControl("ddlGrvFromStn");
        DropDownList ddlGrvTooStn = (DropDownList)e.Row.Cells[4].FindControl("ddlGrvTooStn");
        BLL bll = new BLL();
        ddlGrvFromStn.DataSource = bll.GettingStation();
        ddlGrvFromStn.DataValueField = "CODE_NAME".ToString();
        ddlGrvFromStn.DataTextField = "CODE_NAME".ToString();
        ddlGrvFromStn.DataBind();
        ddlGrvTooStn.DataSource = bll.GettingStation2();
        ddlGrvTooStn.DataValueField = "CODE_NAME".ToString();
        ddlGrvTooStn.DataTextField = "CODE_NAME".ToString();
        ddlGrvTooStn.DataBind();

       }

     }

Thanks for reply . it still place same record into gridview in all rows. pls help me out
thanks again
pls see below code where i m making mistake.....

protected void txtmfno_TextChanged(object sender, EventArgs e)
        {
   DataTable dt= (DataTable)ViewState["Myview"];
            dt = ds1.Tables[0];
            ViewState["Myview"] = dt;
            GrvMfdetails.DataSource = dt;
            GrvMfdetails.DataBind();
}

protected void GrvMfdetails_RowDataBound(object sender, GridViewRowEventArgs e)
        {            

            if (e.Row.RowType == DataControlRowType.DataRow )//&& dt.Rows.Count>0)
            {
                 
                        DropDownList ddlGrvTooStn = (DropDownList)e.Row.Cells[4].FindControl("ddlGrvTooStn");

                        DropDownList ddlGrvFromStn = (DropDownList)e.Row.Cells[0].FindControl("ddlGrvFromStn");
                        BLL bll = new BLL();
                        ddlGrvFromStn.DataSource = bll.GettingStation();
                        ddlGrvFromStn.DataValueField = "CODE_NAME".ToString();
                        ddlGrvFromStn.DataTextField = "CODE_NAME".ToString();
                        ddlGrvFromStn.DataBind();
                        ddlGrvTooStn.DataSource = bll.GettingStation2();
                        ddlGrvTooStn.DataValueField = "CODE_NAME".ToString();
                        ddlGrvTooStn.DataTextField = "CODE_NAME".ToString();
                        ddlGrvTooStn.DataBind();
                        DataTable dt = (DataTable)ViewState["Myview"];

                        var ddlGrvFromStnn = (DropDownList)e.Row.FindControl("ddlGrvFromStn");
                        var txtcnmt = (TextBox)e.Row.FindControl("txtCnmt");
                        var txtPkg = (TextBox)e.Row.FindControl("txtPkg");
                        var txtweight = (TextBox)e.Row.FindControl("txtweight");
                        var ddlGrvTooStnn = (DropDownList)e.Row.FindControl("ddlGrvTooStn");
                        var txtFreight = (TextBox)e.Row.FindControl("txtFreight");
                        var txtGoods = (TextBox)e.Row.FindControl("txtGoods");
                        var txtPM = (TextBox)e.Row.FindControl("txtPM");
                        var txt12 = (TextBox)e.Row.FindControl("txt12");
                        
                        ddlGrvFromStnn.SelectedIndex = ddlGrvFromStnn.Items.IndexOf(ddlGrvFromStnn.Items.FindByValue(dt.Rows[0][0].ToString()));
                        txtcnmt.Text = dt.Rows[0][1].ToString();
                
                        txtPkg.Text = dt.Rows[0][2].ToString();
                        txtweight.Text = dt.Rows[0][3].ToString();
                        ddlGrvTooStnn.SelectedIndex = ddlGrvTooStnn.Items.IndexOf(ddlGrvTooStnn.Items.FindByValue(dt.Rows[0][4].ToString()));
                        txtFreight.Text = dt.Rows[0][5].ToString();
                        txtGoods.Text = dt.Rows[0][6].ToString();
                        txtPM.Text = dt.Rows[0][7].ToString();
                        txt12.Text = dt.Rows[0][8].ToString();
            }
        }

Pls post a screen shot. Code looks correct to me

This looks like correct for me. What do you say wrong here.

Pls post a small screen shot and explain.

And also debug the code add see the values here

protected void GrvMfdetails_RowDataBound(object sender, GridViewRowEventArgs e)
        {            

            if (e.Row.RowType == DataControlRowType.DataRow )//&& dt.Rows.Count>0)
            {

It bind same record in all rows of gridivew. there are two record in dt 
like :

fromStation      CnmtNo     Weight     Goods

Delhi 1505 200 Computer Parts/// this row 1 
Mumbai 1506 300 Books .//// this row no is 2

I should get those two record in gridview same way
but it show row no 2 in to gridview. like:

Mumbai 1506 300 Books/// it should be first row data Problem is here
Mumbai 1506 300 Books

I don't find any issue with code. Comment all the code in the Row_databound method and enable line by line and see the results