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I have a Web Form with a DataList. Inside the ItemTemplate, I have a
DropDownList control. <asp  ataList ID="ProductDataList" Runat="server"><ItemTemplate> <asp ropDownList ID="DropDownList1" Runat="server"DataTextField="PropertyValue" DataValueField="PropertyValueId"> </asp ropDownList></ItemTemplate> </asp ataList>In the Page_Load for the Web Form, I do the following: 1) First I bind the DataList control to a data source. ProductDataList.DataSource = product; ProductDataList.DataBind(); 2) Then I try to bind the DropDownList control to a data source: DropDownList dropdown1 = (DropDownList)ProductDataList.Items[0].FindControl("DropDownList1"); dropdown1.DataSource = propertyValues; dropdown1.DataBind(); The code executes fine and I can see that the data source in step 2 is containing the correct values that should be displayed in the DropDownList control. The problem is that the DropDownList control is empty. If I do exactly the same with a DropDownList control that is placed on the Web Form outside the DataList control, everything works just as expected. Any hints on how to solve this problem? Olav |
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Olav,
It seems to me that you should be doing the databinding the dropdownlists in the datalist ItemDataBound event. Eliyahu "Olav Tollefsen" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)... > I have a Web Form with a DataList. Inside the ItemTemplate, I have a > DropDownList control. > > <asp ataList ID="ProductDataList" Runat="server">> <ItemTemplate> > <asp ropDownList ID="DropDownList1" Runat="server"> DataTextField="PropertyValue" DataValueField="PropertyValueId"> > </asp ropDownList>> </ItemTemplate> > </asp ataList>> > In the Page_Load for the Web Form, I do the following: > > 1) First I bind the DataList control to a data source. > > ProductDataList.DataSource = product; > ProductDataList.DataBind(); > > 2) Then I try to bind the DropDownList control to a data source: > > DropDownList dropdown1 = > (DropDownList)ProductDataList.Items[0].FindControl("DropDownList1"); > dropdown1.DataSource = propertyValues; > dropdown1.DataBind(); > > The code executes fine and I can see that the data source in step 2 is > containing the correct values that should be displayed in the DropDownList > control. > > The problem is that the DropDownList control is empty. If I do exactly the > same with a DropDownList control that is placed on the Web Form outside the > DataList control, everything works just as expected. > > Any hints on how to solve this problem? > > Olav > > |
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Moving the code to the ItemDataBound event handler didn't make any
difference. Seems like the problem is related to using the Visual Studio 2005 Beta 1 refresh. I tested with Visual Studio 2004 and then it worked as expected. Olav "Eliyahu Goldin" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)... > Olav, > > It seems to me that you should be doing the databinding the dropdownlists > in > the datalist ItemDataBound event. > > Eliyahu > > "Olav Tollefsen" <(E-Mail Removed)> wrote in message > news:(E-Mail Removed)... >> I have a Web Form with a DataList. Inside the ItemTemplate, I have a >> DropDownList control. >> >> <asp ataList ID="ProductDataList" Runat="server">>> <ItemTemplate> >> <asp ropDownList ID="DropDownList1" Runat="server">> DataTextField="PropertyValue" DataValueField="PropertyValueId"> >> </asp ropDownList>>> </ItemTemplate> >> </asp ataList>>> >> In the Page_Load for the Web Form, I do the following: >> >> 1) First I bind the DataList control to a data source. >> >> ProductDataList.DataSource = product; >> ProductDataList.DataBind(); >> >> 2) Then I try to bind the DropDownList control to a data source: >> >> DropDownList dropdown1 = >> (DropDownList)ProductDataList.Items[0].FindControl("DropDownList1"); >> dropdown1.DataSource = propertyValues; >> dropdown1.DataBind(); >> >> The code executes fine and I can see that the data source in step 2 is >> containing the correct values that should be displayed in the >> DropDownList >> control. >> >> The problem is that the DropDownList control is empty. If I do exactly >> the >> same with a DropDownList control that is placed on the Web Form outside > the >> DataList control, everything works just as expected. >> >> Any hints on how to solve this problem? >> >> Olav >> >> > > |
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