Referencing the HeaderText of a TemplateField by text value rather than by index

Question

Server side I want to use the HeaderText from a Templatefield from a DetailsView in a String which is to be returned as a text value for a label which is a grandchild of the Templatefield. How do I reference the HeaderText "Care Plan Intent" explicitly in the code behind by name rather than using an index, and then use it in a string to replace the text value for the label which is an Eval of a sql datasource if the value does not meet certain crieria. For instance in the example below, if the value of Eval("CarePlanIntent") is ok then all well and good, otherwise I want to replace it with something like "Either Care Plan Intent has not been entered or it does not meet the set criteria".

<asp:DetailsView ID="dvTest">
<Fields>
<asp:TemplateField HeaderText="Care Plan Intent:">
    <ItemTemplate>
        <asp:Label skinid="tablabelblack" id="lblIntent" runat="server" Text='<%# Eval("CarePlanIntent") %>' />
    </ItemTemplate>
</asp:TemplateField>
</Fields>
</asp:DetailsView>

Answer 1

You can use LINQ to do this:

var field = dvText.Fields.First(i => i.HeaderText == "Care Plan Intent:");
var lbl = (Label)field.FindControl("lblIntent");

if (lbl.Text == "Y")
  lbl.Text = "New Text";

Something like that.... I may have some of the properties or methods wrong; but it should be something like that.

Answer 2

Based on your sample, you can get the label inside the details view instead of finding the proper template field by header text.

Dim lblIntent As Label = CType(dvTest.FindControl("lblIntent"), Label)
If lblIntent.Text <> "Your Condition" Then
    lblIntent.Text = "Some New Text"
End If