一个GridView内从单选按钮列表ASP读值 [英] ASP Read value from RadioButtonList inside of a GridView

问题描述

我有一个ASP.NET的GridView至极我填写的数据，一键，和一个RadioButtonList的4个单选按钮。我怎样才能至极单选按钮被pressing外的按钮在GridView的选择（使用C＃codebehind）？
GridView控件内的按钮应当用于移除一行（RowCommand事件，我认为...）
谢谢！

在GridView中code：

 ＆LT;柱体和GT;
    ＆LT; ASP：BoundField的数据字段=名称的HeaderText =名称/＆GT;
    ＆LT; ASP：BoundField的数据字段=值的HeaderText =值/＆GT;
    ＆LT; ASP：的TemplateField ShowHeader =假的HeaderText =？富＆GT;
        ＆LT;＆ItemTemplate中GT;
            ＆LT; ASP：RadioButtonList的ID =RadioButtonList1=服务器RepeatDirection =水平＆GT;
                ＆LT; ASP：列表项选择=真正的＆GT;项目1 LT; / ASP：ListItem的＆GT;
                ＆LT; ASP：ListItem的＆GT;项目1 LT; / ASP：ListItem的＆GT;
                ＆LT; ASP：ListItem的＆GT;项目2'; / ASP：ListItem的＆GT;
                ＆LT; ASP：ListItem的＆GT;项目3'; / ASP：ListItem的＆GT;
                ＆LT; ASP：ListItem的＆GT;项目4℃; / ASP：ListItem的＆GT;
            ＆LT; / ASP：RadioButtonList的＆GT;
        ＆LT; / ItemTemplate中＆GT;
    ＆LT; / ASP：的TemplateField＆GT;
    ＆LT; ASP：的TemplateField ShowHeader =假的HeaderText =＆GT;
        ＆LT;＆ItemTemplate中GT;
            ＆LT; ASP：按钮的ID =Button1的=服务器文本=删除/＆GT;
        ＆LT; / ItemTemplate中＆GT;
    ＆LT; / ASP：的TemplateField＆GT;
＆LT; /专栏＆GT;
 

解决方案

要知道哪个单选按钮被选中请从目前的code下列步骤操作：

修改您的按钮，这样的：

 ＆LT; ASP：的TemplateField ShowHeader =假的HeaderText =＆GT;
    ＆LT;＆ItemTemplate中GT;
        ＆LT; ASP：按钮的ID =Button1的=服务器文本=删除CommandArgument =＆LT;％＃（（GridViewRow）集装箱）.RowIndex％GT;
            的CommandName =删除/＆GT;
    ＆LT; / ItemTemplate中＆GT;
＆LT; / ASP：的TemplateField＆GT;
 

所以，现在你有的CommandName 和 CommandArgument 属性填写。在 CommandArgument 将行的索引传递给你的 RowCommand 事件。

那么你的 RowCommand 事件是这样的：

 保护无效GridView1_RowCommand（对象发件人，GridViewCommandEventArgs E）
{
    如果（e.CommandName ==删除）
    {
        INT指数= Convert.ToInt32（e.CommandArgument）;
        如果（索引＆gt; = 0）
        {
            //索引是行，现在得到RadioButtonList1此行中
            单选按钮列表RBL =（单选按钮列表）GridView1.Rows [指数] .FindControl（RadioButtonList1）;
            如果（RBL！= NULL）
            {
                选择= rbl.SelectedItem.Text串;
                的Response.Write（行+指数+被选中，单选按钮+选择）;
            }
        }
    }
}
 

注意：我会建议增加值你的单选按钮让你检查对值，而不是文字。

I have a ASP.NET GridView wich I fill with data, one button, and one RadioButtonList with 4 radio buttons. How can I get wich radio button is selected by pressing a button outside of the GridView (using c# codebehind)? The button inside the GridView shall be used for removing a row (RowCommand event I think...) Thanks!

Code from within the GridView:

<Columns>
    <asp:BoundField DataField="name" HeaderText="Name" />
    <asp:BoundField DataField="value" HeaderText="Value" />
    <asp:TemplateField ShowHeader="false" HeaderText="Foo?">
        <ItemTemplate>
            <asp:RadioButtonList ID="RadioButtonList1" runat="server" RepeatDirection="Horizontal">
                <asp:ListItem Selected="true">Item 1</asp:ListItem>
                <asp:ListItem>Item 1</asp:ListItem>
                <asp:ListItem>Item 2</asp:ListItem>
                <asp:ListItem>Item 3</asp:ListItem>
                <asp:ListItem>Item 4</asp:ListItem>
            </asp:RadioButtonList>
        </ItemTemplate>
    </asp:TemplateField>
    <asp:TemplateField ShowHeader="false" HeaderText="">
        <ItemTemplate>
            <asp:Button ID="Button1" runat="server" Text="Remove" />
        </ItemTemplate>
    </asp:TemplateField>
</Columns>

解决方案

To know which RadioButton was selected follow these steps from your current code:

Modify your button to this:

<asp:TemplateField ShowHeader="false" HeaderText="">
    <ItemTemplate>
        <asp:Button ID="Button1" runat="server" Text="Remove" CommandArgument="<%#  ((GridViewRow) Container).RowIndex%>"
            CommandName="remove" />
    </ItemTemplate>
</asp:TemplateField>

so now you have CommandName and CommandArgument properties filled in. The CommandArgument will pass the index of the row to your RowCommand event.

Then your RowCommand event looks like this:

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "remove")
    {
        int index = Convert.ToInt32(e.CommandArgument);
        if (index >= 0)
        { 
            //index is the row, now obtain the RadioButtonList1 in this row
            RadioButtonList rbl = (RadioButtonList)GridView1.Rows[index].FindControl("RadioButtonList1");
            if (rbl != null)
            {
                string selected = rbl.SelectedItem.Text;
                Response.Write("Row " + index + " was selected, radio button " + selected);
            }
        }
    }
}

Note: I would recommend adding Value to your RadioButtons so that you check against values and not text.

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