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我试图在GridView中找到一个单选按钮控件,但我始终得到0
的输出用于我选择的任何单选按钮。我希望每个单选按钮被分配1-4的值,然后选择任何单选按钮,它将被输出到标签。如何查找Gridview中的单选按钮控件
VB代码
Dim SelectNumber As Integer
For Each row As GridViewRow In MyGridView.Rows
Dim radbtn1 As RadioButton = TryCast(row.FindControl("a1"), RadioButton)
Dim radbtn2 As RadioButton = TryCast(row.FindControl("a2"), RadioButton)
Dim radbtn3 As RadioButton = TryCast(row.FindControl("a3"), RadioButton)
Dim radbtn4 As RadioButton = TryCast(row.FindControl("a4"), RadioButton)
If radbtn1.Checked = True Then
SelectNumber = 1
ElseIf radbtn2.Checked = True Then
SelectNumber = 2
ElseIf radbtn3.Checked = True Then
SelectNumber = 3
ElseIf radbtn4.Checked = True Then
SelectNumber = 4
End If
Next
lblOutput.Text = SelectNumber
的源代码
<asp:GridView ShowHeader="false" AutoGenerateColumns="false" ID="MyGridView" runat="server" GridLines="None">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Label runat="server" ID="QuestionID" Text='<%# Eval("QuestionID")%>' />
<asp:Label runat="server" ID="Question" Text='<%# Eval("Question")%>' /><br />
<asp:RadioButton GroupName="gnA" Text='<%# Eval("a1")%>' runat="server" ID="ans1" /><br />
<asp:RadioButton GroupName="gnA" Text='<%# Eval("a2")%>' runat="server" ID="ans2" /><br />
<asp:RadioButton GroupName="gnA" Text='<%# Eval("a3")%>' runat="server" ID="ans3" /><br />
<asp:RadioButton GroupName="gnA" Text='<%# Eval("a4")%>' runat="server" ID="ans4" /><hr />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Button ID="btnSubmit" runat="server" Text="Complete" />
<asp:Label ID="lblOutput" runat="server" Text="" />
哪里的代码中找到你已经证明?我非常肯定,这个问题的原因是你在每次回发时都会绑定网格,而不是仅仅“If Not Page.IsPostback”。然后没有人被选中,并且'SelectNumber'保持它的默认值'0' –
解决了问题 - 谢谢。 – SRock2016