asp.net C#使用javascript函数从网格视图中获取选定行

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="ColumnName" HeaderText="Column Name" />
        <!-- 其他列 -->
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Button ID="btnSelect" runat="server" Text="Select" OnClientClick="return GetSelectedRow('<%# Container.DataItemIndex %>');" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

<script type="text/javascript">
    function GetSelectedRow(index) {
        var gridView = document.getElementById('<%= GridView1.ClientID %>');
        var row = gridView.rows[index + 1]; // +1 是因为GridView的第一行是表头
        var cellValue = row.cells[0].innerText; // 获取第一列的值
        alert('Selected Row Index: ' + index + ', Column Value: ' + cellValue);
        return false; // 阻止按钮的默认提交行为
    }
</script>

<asp:HiddenField ID="HiddenField1" runat="server" />

function GetSelectedRow(index) {
    var gridView = document.getElementById('<%= GridView1.ClientID %>');
    var row = gridView.rows[index + 1];
    var cellValue = row.cells[0].innerText;
    document.getElementById('<%= HiddenField1.ClientID %>').value = cellValue;
    __doPostBack('<%= GridView1.UniqueID %>', ''); // 触发回发
    return false;
}

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "Select")
    {
        string selectedValue = HiddenField1.Value;
        // 处理选定行的数据
    }
}