FormView RadioButtonList value

Question

User1510859543 posted

I am using the code below to try to set the selected value of a RadioButtonList inside a FormView but it is not working.  The test row I have has a value of "shop" in the data item but the RadioButtonList did not get selected.  Any ideas what is missing?

//markup in FormView

        <asp:RadioButtonList ID="rblCheckGoingTo" runat="server" RepeatDirection="Horizontal" onchange="setChange();">
            <asp:ListItem Value="customer" Text="Customer"></asp:ListItem>
            <asp:ListItem Value="shop" Text="Shop"></asp:ListItem>
            <asp:ListItem Value="shop at the end" Text="Shop at the end"></asp:ListItem>
        </asp:RadioButtonList>



//in code behind in Databound event

            Dim rbl As RadioButtonList = row.FindControl("rblCheckGoingTo")
            If Not IsDBNull(fvJobSetup.DataItem("InitialCheckGoingTo")) Then
                For Each item As ListItem In rbl.Items
                    If item.Value = fvJobSetup.DataItem("InitialCheckGoingTo") Then
                        rbl.SelectedValue = fvJobSetup.DataItem("InitialCheckGoingTo").ToLower
                    End If
                Next item
            End If

Answer 1

User-1716253493 posted

add a hiddenfield near the rbl, bind hf value to InitialCheckGoingTo field

Use fv databound event, check fv current mode is correct mode for the rbl, i.e if insert mode the rbl must be in insertitemtemplate

use fv.findcontrols to get the rbl and hf, use hf.value to set rbl selected item

Answer 2

User665608656 posted

Hi dlchase,

According to your question, you could better to make sure that every value in your radiobuttonlist matches your InitialCheckGoingTo successfully. 

Secondly, due to the incompleteness of your code, I can't infer what row is in this statement :

dlchase

Dim rbl As RadioButtonList = row.FindControl("rblCheckGoingTo")

I have made a simple case according to your idea. You can refer to it.

<form id="form1" runat="server">
        <div>
            <asp:FormView ID="FormView1" runat="server" DataKeyNames="RowNumber" DataSourceID="SqlDataSource1" OnDataBound="FormView1_DataBound" AllowPaging="True">
                <ItemTemplate>
                    RowNumber:
                    <asp:Label ID="RowNumberLabel" runat="server" Text='<%# Eval("RowNumber") %>' />
                    <br />
                    FruitName:
                    <asp:Label ID="FruitNameLabel" runat="server" Text='<%# Bind("FruitName") %>' />
                    <br />
                    UnitPrice:
                    <asp:Label ID="UnitPriceLabel" runat="server" Text='<%# Bind("UnitPrice") %>' />
                    <br />
                    Quantity:
                    <asp:Label ID="QuantityLabel" runat="server" Text='<%# Bind("Quantity") %>' />
                    <br />
                    <asp:RadioButtonList ID="rblCheckGoingTo" runat="server" RepeatDirection="Horizontal" onchange="setChange();">
                        <asp:ListItem Value="Apple" Text="Apple"></asp:ListItem>
                        <asp:ListItem Value="Banana" Text="Banana"></asp:ListItem>
                        <asp:ListItem Value="Grapes" Text="Grapes"></asp:ListItem>
                    </asp:RadioButtonList>
                    <br />
                </ItemTemplate>
            </asp:FormView>
            <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:TestConnectionString1 %>" SelectCommand="SELECT * FROM [Fruits]"></asp:SqlDataSource>
        </div>
    </form>

code behind:

Protected Sub FormView1_DataBound(ByVal sender As Object, ByVal e As EventArgs)
    Dim rbl As RadioButtonList = TryCast(FormView1.FindControl("rblCheckGoingTo"), RadioButtonList)
    If Not String.IsNullOrEmpty(drv("FruitName").ToString()) Then
        For Each item As ListItem In rbl.Items
            If item.Value = drv("FruitName").ToString() Then
                rbl.SelectedValue = drv("FruitName").ToString()
                Exit For
            End If
        Next
    End If
End Sub

The result of my work demo: 

 

If I misunderstanding your question, please feel free to let me know.

Best Regards,

YongQing.

Answer 3

User1510859543 posted

Turns out I had to add Trim() to string to match.