Devexpress 复选框不起作用

Question

我的意图是首先将 msform 设置为 visible = false，然后当我单击复选框时会出现 msform，但问题是当我单击复选框时 msform 不会 appear.The代码如下：

ASP.net

<dx:ASPxPopupControl ID="popup" ClientInstanceName="popup" HeaderText="Detail" AllowDragging="true" ShowOnPageLoad="false" PopupHorizontalAlign="WindowCenter" PopupVerticalAlign="WindowCenter" runat="server" Width="60%" Height="60%">

  <dx:ASPxCheckBox ID="mschkbox" runat="server" Text="Minesweeper?" Width="330px" OnCheckedChanged="mschkbox_CheckedChanged1" ClientIDMode="Static"></dx:ASPxCheckBox>


                  <dx:ASPxFormLayout ID="MsForm" Visible="False" runat="server" ClientIDMode="static">
                    <Items>

                    <dx:LayoutItem Caption="MS Product">
                        <LayoutItemNestedControlCollection>
                            <dx:LayoutItemNestedControlContainer>
                                <dx:ASPxTextBox ID="msproductbox" runat="server" Width="100%" CssClass="maxWidth"> 
                                    <ValidationSettings Display="Dynamic" RequiredField-IsRequired="true" ErrorDisplayMode="Text" SetFocusOnError="true" ErrorTextPosition="Bottom" ErrorFrameStyle-Wrap="true"/>
                                </dx:ASPxTextBox>
                            </dx:LayoutItemNestedControlContainer>
                        </LayoutItemNestedControlCollection>
                    </dx:LayoutItem>

                   <dx:LayoutItem Caption="MS 1st Pilot Lot ID">
                        <LayoutItemNestedControlCollection>
                            <dx:LayoutItemNestedControlContainer>
                                <dx:ASPxTextBox ID="mslotidbox" runat="server"  Width="100%" CssClass="maxWidth"> 
                                    <ValidationSettings Display="Dynamic" RequiredField-IsRequired="true" ErrorDisplayMode="Text" SetFocusOnError="true" ErrorTextPosition="Bottom" ErrorFrameStyle-Wrap="true"/>
                                </dx:ASPxTextBox>
                            </dx:LayoutItemNestedControlContainer>
                        </LayoutItemNestedControlCollection>
                    </dx:LayoutItem>
</dx:ASPxFormLayout>

</dx:ASPxPopupControl>

vb.net

Protected Sub mschkbox_CheckedChanged1(sender As Object, e As EventArgs)

        If (mschkbox.Checked = True) Then
            MsForm.Visible = True
        Else
            MsForm.Visible = False
        End If

    End Sub

Answer 1

必须将 AutoPostBack 属性设置为 True 以便在代码隐藏中正确处理 OnCheckedChanged 事件：

<dx:ASPxCheckBox ID="mschkbox" runat="server" AutoPostBack="True" Text="Minesweeper?" 
Width="330px" OnCheckedChanged="mschkbox_CheckedChanged1" ClientIDMode="Static">
</dx:ASPxCheckBox>

如果你的ASPxCheckBox放在ASPxGridView的DataItemTemplate里面，我建议你阅读this issue and this，因为你使用的是ClientIDMode="Static"属性。

Devexpress 复选框不起作用

Devexpress Checkbox is not functioning

vb.net

asp.net

devexpress