RadioButtonList 在按钮单击时丢失值
我在 ASPX GridView 的 dataItemTemplate 中有一个 RadioButtonList 。我想要 ButtonClick 事件上每个 RadioButtonList 的选定索引。在按钮单击事件中，radioButton 列表的 selectedIndex 为 -1。如何让我的 RadioList 记住用户在按钮单击事件中选择的值。
网格的 EnableCallbacks 为 true
网格的 Enableviewstate 为 true
RadioList 的 AutoPostBack 为 false。
<DataItemTemplate>
<dxe:ASPxRadioButtonList ID="m_RadioList" runat="server"
Border-BorderStyle="None" ClientInstanceName="RadioList"
OnInit="OnRadioListInit">
<Border BorderStyle="None" />
<Items>
<dxe:ListEditItem Text="M" Value="0" />
<dxe:ListEditItem Text="F" Value="1" />
<dxe:ListEditItem Text="NA" Value="2" />
</Items>
</dxe:ASPxRadioButtonList>
</DataItemTemplate>
protected void OnASPxButtonClick(object sender, EventArgs e)
{
for (int row = 0; row < m_ASPxGridView.VisibleRowCount; row++)
{
ASPxRadioButtonList radio = m_AccessPoint_UsersASPxGridView.FindRowCellTemplateControl(row,null, "m_RadioList") as ASPxRadioButtonList;
int r = (int) radio.SelectedIndex;
}
}
I have a RadioButtonList in the dataItemTemplate of the ASPX GridView. I want the selected index for each RadioButtonList on the ButtonClick event. On the button click event the selectedIndex for the radioButton list is -1. How do I make my RadioList remember the user selected values in the button click event.
EnableCallbacks for grid is true
Enableviewstate for grid is true
AutoPostBack for RadioList is false.
<DataItemTemplate>
<dxe:ASPxRadioButtonList ID="m_RadioList" runat="server"
Border-BorderStyle="None" ClientInstanceName="RadioList"
OnInit="OnRadioListInit">
<Border BorderStyle="None" />
<Items>
<dxe:ListEditItem Text="M" Value="0" />
<dxe:ListEditItem Text="F" Value="1" />
<dxe:ListEditItem Text="NA" Value="2" />
</Items>
</dxe:ASPxRadioButtonList>
</DataItemTemplate>
protected void OnASPxButtonClick(object sender, EventArgs e)
{
for (int row = 0; row < m_ASPxGridView.VisibleRowCount; row++)
{
ASPxRadioButtonList radio = m_AccessPoint_UsersASPxGridView.FindRowCellTemplateControl(row,null, "m_RadioList") as ASPxRadioButtonList;
int r = (int) radio.SelectedIndex;
}
}
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评论（2）
您的网格可能会在页面加载中再次绑定，这就是为什么您的单选按钮列表也再次绑定，并且您将丢失所选值。确保在页面加载时绑定在
if(!Page.IsPostBack)下。Your grid might bind again in your page load, and that's why your radiobuttonlist also bound again, and you are losing your selected value. Make sure you bind under
if(!Page.IsPostBack)in your page load.如果您想在页面加载时绑定 GridView ，最好的办法是在读取
RadioButtonList的databind之前调用一个函数您的 GridView 并将其保存在静态 DataTable 中The best thing to do if you want to bind the
GridViewon page load, is to call a function before thedatabindthat reads theRadioButtonListin yourGridViewand save it in a staticDataTable