> Hello,
[cut]
> So, what I'm doing wrong?

"Adam" wrote:

> Hello,
> I am still learning C#, so please bear with me.
> I have a two Form, from first I open second form with datagrid. When I
> Dispose datagrid second time I get a ObjectDisposedException.
>
> In first (main) form I have a button with code under onclick event:
>
> temp_n = this.Text;
> this.Text = string.Empty;
> Form1 frm1 = new Form1;
> frm1.ShowDialog();
> frm1.Dispose();
> this.Text = temp_n;
>
>
> and in second form:
>
> private void Form1_Load(object sender, EventArgs e)
> {
> ceCmd = Global.DatabaseConnection.CreateCommand();
> ceCmd.CommandText = "select col1,col2 from table";
> ceCmd.CommandType = CommandType.Text;
> ceResSet = ceCmd.ExecuteResultSet(ResultSetOptions.Scrollable);
> dataGrid1.DataSource = ceResSet;
> }
>
> and
>
> private void Form1_Closed(object sender, EventArgs e)
> {
> if (ceResSet != null)
> {
> ceResSet.Close();
> ceResSet.Dispose();
> }
> if (dataGrid1 != null) dataGrid1.Dispose();
> }
>
> and when I twice opened and closed second Form i get a
> ObjectDisposedException on
> "if (dataGrid1 != null) dataGrid1.Dispose();"
> it's strange to me because when i put button on second form and add event:
>
> private void Button_Click(object sender, EventArgs e)
> {
> if (ceResSet != null)
> {
> ceResSet.Close();
> ceResSet.Dispose();
> }
> if (dataGrid1 != null) dataGrid1.Dispose();
>
> this.Close();
>
> }
>
> everything is OK. So i tried put datagrid1.Dispose() on override OnClosing
> and override OnClosed but with no change - DisposedException still occurs.
>
> So, what I'm doing wrong?