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Hi,
I used a dropdown control bind to a datagrid.
<EditItemTemplate>
<aspropDownList ID="FldType_edit" Runat="server" DataSource='<
%#GetFieldType()%>' DataTextField="Type" />
</EditItemTemplate>

The values for the datagrid are retrieved from the database using the
GetFieldType function


public DataSet GetFieldType()
{
SqlDataAdapter fldad = new SqlDataAdapter("SELECT
Type
FROM FieldType Order by FID", myConnection);
DataSet fldds = new DataSet();
fldad.Fill(fldds,"FieldType");
return fldds;



}


Then i try to retrieve the selected the values in the database. i
thought of doing this in the update command event.

public void DataGrid_Fields_UpdateCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
if (e.Item.ItemType == ListItemType.EditItem)
{
DropDownList dd;
dd = (DropDownList)e.Item.FindControl("FieldType_edit") ;
string fldval=dd.SelectedItem.Value;
Response.Write("Field Value is "+ fldval+" ");
}



}


While executing this i am getting the following error:

System.NullReferenceException: Object reference not set to an
instance
of an object.


While debugging, i found the value of dd is "Unexpected value". The
value is not assigned for dd. Kindly help me to come out from that.


Thanks & Regards,
Yasodhai

On Mar 9, 10:22 am, yasod...@gmail.com wrote:
> Hi,
> I used a dropdown control bind to a datagrid.
> <EditItemTemplate>
> <aspropDownList ID="FldType_edit" Runat="server" DataSource='<
> %#GetFieldType()%>' DataTextField="Type" />
> </EditItemTemplate>
>
> The values for the datagrid are retrieved from the database using the
> GetFieldType function
>
> public DataSet GetFieldType()
> {
> SqlDataAdapter fldad = new SqlDataAdapter("SELECT
> Type
> FROM FieldType Order by FID", myConnection);
> DataSet fldds = new DataSet();
> fldad.Fill(fldds,"FieldType");
> return fldds;
>
> }
>
> Then i try to retrieve the selected the values in the database. i
> thought of doing this in the update command event.
>
> public void DataGrid_Fields_UpdateCommand(object source,
> System.Web.UI.WebControls.DataGridCommandEventArgs e)
> {
> if (e.Item.ItemType == ListItemType.EditItem)
> {
> DropDownList dd;
> dd = (DropDownList)e.Item.FindControl("FieldType_edit") ;
> string fldval=dd.SelectedItem.Value;
> Response.Write("Field Value is "+ fldval+" ");
> }
>
> }
>
> While executing this i am getting the following error:
>
> System.NullReferenceException: Object reference not set to an
> instance
> of an object.
>
> While debugging, i found the value of dd is "Unexpected value". The
> value is not assigned for dd. Kindly help me to come out from that.
>
> Thanks & Regards,
> Yasodhai

"FldType_edit" != "FieldType_edit"

You named your control as FldType_edit

ok. Thanks a lot.

Regards,
Yasodhai

On Mar 9, 5:49 pm, "Alexey Smirnov" <alexey.smir...@gmail.com> wrote:
> On Mar 9, 10:22 am, yasod...@gmail.com wrote:
>
>
>
>
>
> > Hi,
> > I used a dropdown control bind to a datagrid.
> > <EditItemTemplate>
> > <aspropDownList ID="FldType_edit" Runat="server" DataSource='<
> > %#GetFieldType()%>' DataTextField="Type" />
> > </EditItemTemplate>
>
> > The values for the datagrid are retrieved from the database using the
> > GetFieldType function
>
> > public DataSet GetFieldType()
> > {
> > SqlDataAdapter fldad = new SqlDataAdapter("SELECT
> > Type
> > FROM FieldType Order by FID", myConnection);
> > DataSet fldds = new DataSet();
> > fldad.Fill(fldds,"FieldType");
> > return fldds;
>
> > }
>
> > Then i try to retrieve the selected the values in the database. i
> > thought of doing this in the update command event.
>
> > public void DataGrid_Fields_UpdateCommand(object source,
> > System.Web.UI.WebControls.DataGridCommandEventArgs e)
> > {
> > if (e.Item.ItemType == ListItemType.EditItem)
> > {
> > DropDownList dd;
> > dd = (DropDownList)e.Item.FindControl("FieldType_edit") ;
> > string fldval=dd.SelectedItem.Value;
> > Response.Write("Field Value is "+ fldval+" ");
> > }
>
> > }
>
> > While executing this i am getting the following error:
>
> > System.NullReferenceException: Object reference not set to an
> > instance
> > of an object.
>
> > While debugging, i found the value of dd is "Unexpected value". The
> > value is not assigned for dd. Kindly help me to come out from that.
>
> > Thanks & Regards,
> > Yasodhai
>
> "FldType_edit" != "FieldType_edit"
>
> You named your control as FldType_edit- Hide quoted text -
>
> - Show quoted text -