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

The solution is somewhat simple; once you have deleted the row from the datagrid (Your code ONLY removes the row from the grid and NOT the datasource) then you do not need to do anything else. As you are doing a databind operation immediately after, without updating the datasource, you are re-adding all the rows from the source to the gridview control (including the row removed from the grid in the previous statement).

To simply delete from the grid without a datasource then just call the delete operation on the grid and that is all you need to do... no databinding is needed after that.

Answer 2

If I remember from your previous questions, you're binding to a DataTable. Try this:

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{

    DataTable sourceData = (DataTable)GridView1.DataSource;

    sourceData.Rows[e.RowIndex].Delete();

    GridVie1.DataSource = sourceData;
    GridView1.DataBind();
}

Essentially, as I said in my comment, grab a copy of the GridView's DataSource, remove the row from it, then set the DataSource to the updated object and call DataBind() on it again.

Answer 3

Your delete code looks like this

Gridview1.DeleteRow(e.RowIndex);
Gridview1.DataBind();

When you call Gridview1.DataBind() you will populate your gridview with the current datasource. So, it will delete all the existent rows, and it will add all the rows from CustomersSqlDataSource.

What you need to do is delete the row from the table that CustomersSqlDataSource querying.

You can do this very easy by setting a delete command to CustomersSqlDataSource, add a delete parameter, and then execute the delete command.

CustomersSqlDataSource.DeleteCommand = "DELETE FROM Customer Where CustomerID=@CustomerID"; // Customer is the name of the table where you take your data from. Maybe you named it different 
CustomersSqlDataSource.DeleteParameters.Add("CustomerID", Gridview1.DataKeys[e.RowIndex].Values["CustomerID"].ToString());
CustomersSqlDataSource.Delete();
Gridview1.DataBind();

But take into account that this will delete the data from the database.

Answer 4

//message box before deletion
protected void grdEmployee_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        foreach (DataControlFieldCell cell in e.Row.Cells)
        {
            foreach (Control control in cell.Controls)
            {
                LinkButton button = control as LinkButton;
                if (button != null && button.CommandName == "Delete")
                    button.OnClientClick = "if (!confirm('Are you sure " +
                           "you want to delete this record?')) return false;";
            }
        }
    }
}

//deletion
protected void grdEmployee_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
    conn.Open();
    int empid = Convert.ToInt32(((Label)grdEmployee.Rows[e.RowIndex].Cells[0].FindControl("lblIdBind")).Text);
    SqlCommand cmdDelete = new SqlCommand("Delete from employee_details where id=" + empid, conn);
    cmdDelete.ExecuteNonQuery();
    conn.Close();
    grdEmployee_refreshdata();

}

Answer 5

I think you are doing same mistake of rebinding as mentioned in this link

How to delete row from gridview?

Answer 6

Add the below line in Page load,

ViewState["GetRecords"] = dt;

then try this,

protected void DeleteRows(object sender, GridViewDeleteEventArgs e)
{
   dt = ViewState["GetRecords"] as DataTable;
   dt.Rows.RemoveAt(e.RowIndex);
    dt.AcceptChanges();
    ViewState["GetRecords"] = dt;
    BindData();
}

If you Still have any problem, send the code in BindData() method