Develop Reference

EditItemTemplate and InsertItemTemplate wont allow dropdownlist designer entry

I'm working on an aspx page where I'm trying to reference a dropdownlist from my code behind, now I add the dropdownlist to the page (ddlProgram) and its fine but soon as I move it into the InsertItemTemplate or EditItemTemplate or my GridView where I need it to go the designer entry disappears and I can no longer reference it from the code behind, is there a way around this? I have tried using the FindControl("ControlID") method but it always returns null. I need to set the selected index to 0 when the cancel button is click on my page. Thanks!
<asp:TemplateField HeaderText="Program" SortExpression="IDProgram">
<EditItemTemplate>
<asp:DropDownList ID="ddlProgram" AppendDataBoundItems="true" runat="server" DataSourceID="odsProgram" DataTextField="NameWithCode" DataValueField="IDProgram" CssClass="form-control ddl-normalize">
<asp:ListItem Text="No Program" Value="-1"></asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="programName" runat="server" Text='<%# getProgramName((Eval("IDProgram")?? string.Empty).ToString()) %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>

Unable to edit Asp.net DropDownList from code behind

I'm working on an ASP.net Web Forms application (not MVC) and I have a DropDownList wrapped by a TemplateField in a DetailsView like this:
<asp:TemplateField>
<ItemTemplate> </ItemTemplate>
<EditItemTemplate> </EditItemTemplate>
<InsertItemTemplate>
<div class="form-group">
<asp:DropDownList ID="myStatus" runat="server" DataSourceID="DBStatus"
DataTextField="DESC" DataValueField="CODE"
Enabled="false" SelectedValue='<%# Bind("Status") %>'>
</asp:DropDownList>
</div>
</InsertItemTemplate>
</asp:TemplateField>
as you can see at insertion its not enabled (Enabled="false")
for simplicity I wanted to use the insertion items/fields to achieve a search
so I want to enable my DropDownList for that search
I tried using these from code-behind on DetailsView_PreRender and Page_Load but nothing worked:
DropDownList Status = DetailsView1.FindControl("myStatus") as DropDownList;
Status.Enabled = true;
and i also tried
Status.Attributes.Add("enabled", "enabled");
i also debugged it, and these commands are executed but the DropDownList doesn't want to be enabled.
any thoughts ?
thanks.

How to wrap the DropDownList in the GridView FooterTemplate?

Please help me to fix the issue with wrapping the text in asp.net GridView FooterTemplate.
I am alyready wrapping <ItemTemplate> and <EditItemTemplate> using the below command
<asp:TemplateField ItemStyle-Wrap="true"
but the same code is not working for the FooterTemplate.
Please see the below code
<asp:TemplateField ItemStyle-Width="120px" HeaderText="Bureau" ItemStyle-Wrap="true">
<ItemTemplate>
<asp:Label ID="lblBureau" runat="server" Text = '<%# Eval("Bureau_Ref_Type")%>'
></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:Label ID="lblBureauEdit" runat="server" Visible="false" Text = '<%# Eval("Bureau_Ref_Id")%>'></asp:Label>
<asp:DropDownList ID="ddlBureauEdit" runat="server">
</asp:DropDownList>
</EditItemTemplate>
<FooterTemplate>
<asp:DropDownList ID="ddlBureauFooter" runat="server">
</asp:DropDownList>
</FooterTemplate>
</asp:TemplateField>
If i reduce the size in the FooterTemplate Dropdowlist items text page seems to fit in 1024 px resolution,but our client wants the same resolution with out reducing the Item text size. So i need all experts to help wrapping the items in the FooterTemplate.
Thanks
Sam

You need to use the FooterStyle to style that section. Your ItemStyle settings only apply to actual data items (not footers or headers).
You could rewrite the first section of your markup like this:
<asp:TemplateField HeaderText="Bureau">
<ItemStyle Width="120px" Wrap="true"></ItemStyle>
<FooterStyle Wrap="true"></FooterStyle>
<ItemTemplate>
...
Notice that I moved your ItemStyle settings into the <ItemStyle> settings block, as well as adding the <FooterStyle> settings block.

Eval() in a DropDownList within a GridView

How can I do Eval() in a DropDownList that are inside a GridView?
I tried the follow code, but still wrong:
<asp:TemplateField HeaderText="Prioridade">
<ItemTemplate>
<asp:DropDownList ID="ddlPrioridade" runat="server"
SelectedValue='<%# Eval("Prioridade") %>'>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>

Try this way
<asp:DropDownList ID="ddlPrioridade" runat="server" AppendDataBoundItems="true" DataSourceID="datasource" DataTextField="key" DataValueField="data" AutoPostBack="True" SelectedValue='<%# Eval("Prioridade") %>'>
also have a look at this DropDownList inside a GridView (or DataGrid). It might help you

You are receiving this error because the drop down list is not loaded with items and asp.net is trying to set the selected value of an empty drop down list and that's why it gives you error. So fill the drop down list first before setting it's selected value.

Send value of gridview row using hyperlink within it

I am not able to sent the value of the MachineID to another page using the hyperlink in gridview.
<!-- <asp:TemplateField HeaderText="FailedFiles"
SortExpression="NumFailedFilesOverSLA">
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server"
Text='<%#Bind("NumFailedFilesOverSLA") %>'>
</asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
I have tried putting
DataNavigateUrlFields="MachineID"
DataNavigateUrlFormatString="GetFilesFailed.aspx?id={0}"
but don't know why this is not working??
Please suggest...
thanks

<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server"
NavigateUrl='<%# Eval("Inventory_ID", "/default.aspx?ID={0}") %>'
Text="Details"></asp:HyperLink>
</ItemTemplate>
This should solve your problem. This is exactly how I used it.

If this doesn't work, then check that you are actually getting a value back from the DB for MachineID:
<asp:HyperLink ID="HyperLink1" Text='<%# Bind("NumFailedFilesOverSLA") %>'
runat="server" DataNavigateUrlFields="MachineID"
DataNavigateUrlFormatString="GetFilesFailed.aspx?id={0}">
</asp:HyperLink>

First, try to put the default gridview in the page and attach it to the data source, so you can test if there is data to display.
If you are assigning the data source from code behind don't forget to call the DataBind() method after that.