Question

Asp.net RadioButtonList的选值问题

我想实现下列效果.不知道大家是不是明白
<asp:RadioButtonList runat="server" ID="myRadio">
<asp:ListItem>a</asp:ListItem>
<asp:ListItem>b</asp:ListItem>
<asp:ListItem>c</asp:ListItem>
</asp:RadioButtonList>
页面上有个textbox.还有个button.当我在textbox里输入1,点button后.
让Radiobutton也选中 ListItem b.
高分送上..拜谢了!!!!

Answer 1

protected void Button1_Click ( object sender , EventArgs e )
{
if ( this.TextBox1.Text == "1" )
{
this.myRadio.SelectedIndex = 1;
}
else
{
this.myRadio.SelectedIndex = -1;
}
}

Answer 2

明白你的需求

if(myRadio.items.Selected == textbox.Text)
{
myRadio.items[1].checked = true;
}

大约是这个意思,没上机试

Answer 3

int index = Convert.ToInt16(TextBox1.Text); //得到输入的值
if (index >= myRadio.Items.Count) //判断是否超出原始项目的数目
{
ClientScript.RegisterStartupScript(GetType(), "", "alert('输入值超出范围!')", true);
return;
}
myRadio.SelectedIndex = -1; //把原来选中的项目取消
myRadio.Items[index].Selected = true; //让输入项选中

Answer 4

<script type="text/javascript" language="javascript">

function SetRadioIndex() {
var sIndex = document.getElementById("<%=txt.ClientID %>").value;
if (sIndex == "") {
return false;
}
if (!isNaN(sIndex)) {

var myRadio = document.getElementById("<%=myRadio.ClientID %>");
var iItemsCount = myRadio.getElementsByTagName("input").length;
if (sIndex >= iItemsCount) {
alert("索引超出范围");
return;
}
else
document.getElementById("<%=myRadio.ClientID %>" + "_" + sIndex).checked = true
return true;
}
else {
alert("请输入数字");
return false;
}
}
</script>

<asp:RadioButtonList runat="server" ID="myRadio">
<asp:ListItem>a</asp:ListItem>
<asp:ListItem>b</asp:ListItem>
<asp:ListItem>c</asp:ListItem>
</asp:RadioButtonList>
<asp:TextBox runat="server" ID="txt"></asp:TextBox>
<asp:Button runat="server" ID="btn" Text="ok" OnClientClick="return SetRadioIndex()" />