Grid view Selected Index

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sir I am Select Gridview RowIndex But He Selected -1 Value Please Help Me

C#

protected void ImgBtnDelete_Click(object sender, ImageClickEventArgs e)//ImageClickEventArgs
        {
            int row = Convert.ToInt32(GridView1.SelectedIndex.ToString()) ;
            DataTable Dt = (DataTable) ViewState ["CurrentTable"] ;
            DataRow DrCurrentRow = null;
            int RowIndex = Convert.ToInt32(row);    
            //row.RowIndex
            if (Dt.Rows.Count > 1) 
            {
              Dt.Rows.Remove(Dt.Rows[RowIndex]);
              DrCurrentRow = Dt.NewRow();
              ViewState["CurrentTable"] = Dt;
              GridView1.DataSource = Dt;
              GridView1.DataBind();
              for (int i = 0; i < GridView1.Rows.Count - 1; i++) 
              {
                  GridView1.Rows[i].Cells[0].Text = Convert.ToString(i + 1);  
              }    

            }  
  
        }

[Edit]Code block added[/Edit]

Posted 21-Dec-12 1:24am

manoj s sherje

Updated 21-Dec-12 1:25am

Thomas Daniels

v2

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[no name] 21-Dec-12 7:32am

problem ???

2 solutions

Solution 2

HTML

<asp:ImageButton ID="ImgBtnDelete" runat="server"
                   ImageUrl="~/Images/delete.jpg" Height="20px" Width="20px" onclick="ImgBtnDelete_Click"
                   ImageAlign="AbsMiddle"  OnClientClick="javascript:return confirm('Are you sure you want to permanently delete this item?  This action cannot be reversed.')" />

C#

protected void ImgBtnDelete_Click(object sender, ImageClickEventArgs e)//ImageClickEventArgs
        {
            ImageButton ibtn1 = sender as ImageButton;
            int rowIndex = Convert.ToInt32(ibtn1.Attributes["RowIndex"]);
            //int  Row = Convert.ToInt32( GridView1.DataKeys[GridView1.SelectedIndex]);    
           // int row = Convert.ToInt32(GridView1.SelectedIndex.ToString()) ;
            DataTable Dt = (DataTable) ViewState ["CurrentTable"] ;
            DataRow DrCurrentRow = null;
            int RowIndex = Convert.ToInt32(rowIndex);    
            //row.RowIndex
            if (Dt.Rows.Count > 1) 
            {
              Dt.Rows.Remove(Dt.Rows[RowIndex]);
              DrCurrentRow = Dt.NewRow();
              ViewState["CurrentTable"] = Dt;
              GridView1.DataSource = Dt;
              GridView1.DataBind();
              for (int i = 0; i < GridView1.Rows.Count - 1; i++) 
              {
                  GridView1.Rows[i].Cells[0].Text = Convert.ToString(i + 1);  
              }   
            }    
        }

Posted 21-Dec-12 19:34pm

manoj s sherje

Updated 22-Dec-12 0:32am

v2

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Thomas Daniels · Accepted Answer · 2012-12-21T01:29:00

Solution 1

If the SelectedIndex property is -1, there's no row selected. -1 is also the default value, which indicates that no row is selected.

Posted 21-Dec-12 1:29am

Thomas Daniels

Comments

manoj s sherje 21-Dec-12 7:36am

but sir i am give this image button
<asp:ImageButton ID="ImgBtnDelete" runat="server"
ImageUrl="~/Images/delete.jpg" Height="20px" Width="20px"
ImageAlign="AbsMiddle" onclick="ImgBtnDelete_Click" OnClientClick="javascript:return confirm('Are you sure you want to permanently delete this item? This action cannot be reversed.')" />

and this image button i ma deleting grid view row how is possible
please help

Thomas Daniels 21-Dec-12 7:48am

First, the user must select a row, and then SelectedIndex isn't -1.