好的,您可以通过HiddenField 或在数据库中查找来做到这一点。
隐藏字段
在包含 ImageButton 的 ItemTemplate 中,为 ImageButton 添加 CommandName 和 CommandArgument 属性,以及从数据库中绑定到评论字段的 HiddenField:
<asp:TemplateField HeaderText="Comment">
<ItemTemplate>
<asp:ImageButton ID="btnComment" runat="server" ImageUrl="images/comment.gif" CommandName="SelectComment" CommandArgument='<%# Container.DataItemIndex %>' />
<asp:HiddenField runat="server" id="CommentHiddenField" Value='<%# Eval("Comment") %>' />
</ItemTemplate>
</asp:TemplateField>
在代码隐藏中,为 GridView 添加一个处理 RowCommand 事件的方法:
Private Sub Gridview2_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles Gridview2.RowCommand
Dim rowIndex As Integer
Dim commentHiddenField As HiddenField
If e.CommandName = "SelectComment" Then
rowIndex = Integer.Parse(e.CommandArgument.ToString)
commentHiddenField = DirectCast(Gridview1.Rows(rowIndex).Cells(5).FindControl("CommentHiddenField"), HiddenField)
txtComments.Text = commentHiddenField.Value
End If
End Sub
数据库查找
为 ImageButton 添加属性:
<asp:TemplateField HeaderText="Comment">
<ItemTemplate>
<asp:ImageButton ID="btnComment" runat="server" ImageUrl="images/comment.gif" CommandName="SelectComment" CommandArgument='<%# Container.DataItemIndex %>' />
</ItemTemplate>
</asp:TemplateField>
在代码隐藏中,为 GridView 添加一个处理 RowCommand 事件的方法:
Private Sub Gridview2_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles Gridview2.RowCommand
Dim rowIndex As Integer
Dim key As String
rowIndex = Integer.Parse(e.CommandArgument.ToString)
key = Gridview1.DataKeys(rowIndex).Value.ToString
txtComments.Text = GetCommentFromDB(key)
End Sub