How to delete row in gridview using rowdeleting event?

Question

This is my .cs code :

protected void Gridview1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
 Gridview1.DeleteRow(e.RowIndex);
 Gridvi         


        

Answer 1

Here is a trick with what you want to achieve. I was also having problem like you.

Its hard to get selected row and data key in RowDeleting Event But it is very easy to get selected row and datakeys in SelectedIndexChanged event. Here's an example-

protected void gv_SelectedIndexChanged(object sender, EventArgs e)
{
        int index = gv.SelectedIndex;
        int vehicleId = Convert.ToInt32(gv.DataKeys[index].Value);
        SqlConnection con = new SqlConnection("-----");
        SqlCommand com = new SqlCommand("DELETE FROM tbl WHERE vId = @vId", con);
        com.Parameters.AddWithValue("@vId", vehicleId);
        con.Open();
        com.ExecuteNonQuery();
}

Answer 2

Make sure to create a static DataTable object and then use the following code:

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
    dt.Rows.RemoveAt(e.RowIndex); 
    GridView1.DataSource = dt;
    GridView1.DataBind();
}

Answer 3

The easiest way is to create your GridView with some data source in ASP and call that data source in Row_Deletinng Event. For example if you have SqlDataSource1 as your GridView data source, your Row_Deleting event would be:

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
      int ID = int.Parse(GridView1.Rows[e.RowIndex].FindControl("ID").toString());
      string delete_command = "DELETE FROM your_table WHERE ID = " + ID;
      SqlDataSource1.DeleteCommand = delete_command;
}

Answer 4

     protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        int index = GridView1.SelectedIndex;
        int id = Convert.ToInt32(GridView1.DataKeys[index].Value);
        SqlConnection con = new SqlConnection(str);
        SqlCommand com = new SqlCommand("spDelete", con);
        com.Parameters.AddWithValue("@PatientId", id);
        con.Open();
        com.ExecuteNonQuery();

Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index