当单击 gvSquid2 中的选择按钮时,x 得到一个有效且正确的值。单击 gvSquid 中的选择按钮时,我得到一个 ArgumentOutOfRange 异常,因为 gv. SelectedIndex
=0。此外,gv。SelectedDataKey
一片空白。我如何获取DataKey
信息?将其放在列中是不可接受的,因为它必须对用户隐藏。隐藏列是没有用的,因为在 期间DataBind()
,该值被丢弃。我从微软的网站上摘录了这个例子。我错过了什么?
<asp:gridview ID="gvSquid2" DataSourceID="dsComments" AutoGenerateColumns="false" AutoGenerateSelectButton="true" DataKeyNames="ID" OnSelectedIndexChanged="gvSquid_SelectedIndexChanged" runat="server" EnableViewState="false">
<Columns>
<asp:BoundField DataField="Date" ReadOnly="true" HeaderText="Date" SortExpression="Date" />
<asp:BoundField DataField="Comment" ReadOnly="true" HeaderText="Comment" SortExpression="Comment" />
<asp:BoundField DataField="Username" ReadOnly="true" HeaderText="User" SortExpression="Username" />
</Columns>
</asp:gridview>
<asp:gridview ID="gvSquid" DataSourceID="dsComments" AutoGenerateColumns="false" DataKeyNames="ID" OnSelectedIndexChanged="gvSquid_SelectedIndexChanged" runat="server" EnableViewState="false">
<Columns>
<asp:CommandField ButtonType="Image" HeaderText="Select" ShowSelectButton="true" SelectImageUrl="~/includes/RedX.jpg" />
<asp:BoundField DataField="Date" ReadOnly="true" HeaderText="Date" SortExpression="Date" />
<asp:BoundField DataField="Comment" ReadOnly="true" HeaderText="Comment" SortExpression="Comment" />
<asp:BoundField DataField="Username" ReadOnly="true" HeaderText="User" SortExpression="Username" />
</Columns>
</asp:gridview>
protected void gvSquid_SelectedIndexChanged(object sender, EventArgs e) {
string x;
x = gvSquid.DataKeys[gvSquid.SelectedIndex].Value.ToString();
}