Question

我有一个带有datagridview的网页，用户应该可以点击selectindexchanged（在这种情况下是“选择”按钮），显示他们在第二页上的标签中选择的内容的结果，还可以重定向他们到那个页面。这是我对vb.net的代码：

Imports System.Data.SqlClient
Imports System.Data
Partial Class _Default
    Inherits System.Web.UI.Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        TimeDateLabel.Text = String.Format("Today is {0:F}", DateTime.Now)
        TextBox1.Focus()
    End Sub
    Protected Sub whosoncallButton_click(ByVal sender As Object, ByVal e As System.EventArgs) Handles whosoncallButton.Click
        Dim dt As New DataTable
        Dim da As New SqlDataAdapter
        Dim cmd As New SqlCommand
        Dim connectionString As String = "Initial Catalog=mdr;Data Source=xxxxx;uid=xxxxx;password=xxxxx"
        Dim con As New SqlConnection(connectionString)
        con.Open()
        cmd.Connection = con
        cmd.CommandType = CommandType.StoredProcedure
        cmd.CommandText = "getoncall"
        cmd.Parameters.AddWithValue("@subschedule", TextBox1.Text)
        Try
            da.SelectCommand = cmd
            da.Fill(dt)
            GridView1.DataSource = dt
            GridView1.DataBind()
            con.Dispose()
        Catch ex As Exception
            Response.Write("Error:" & ex.Message)
        End Try
    End Sub
    Protected Sub clearButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles clearButton.Click
        TextBox1.Text = ""
        GridView1.DataSource = Nothing
        GridView1.DataBind()
    End Sub
    Protected Sub GridView1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView1.SelectedIndexChanged
        Dim row As GridViewRow = GridView1.SelectedRow
        Response.Redirect("Default2.aspx?msg=" + row.Cells(1).Text)
    End Sub

End Class

我还在事件处理程序的aspx页面中添加了一行。

我调试了这个但是无论我到目前为止尝试过什么，SelectIndexChanged事件都没有被触发。有人可以帮我吗？

谢谢

道格

Answer 1

如果没有看到你的ASPX GridView，就无法确定为什么这不起作用，但我猜你没有正确生成你的选择按钮。你在GridView中设置了这个属性吗？

autogenerateselectbutton="True"

根据您在下面的评论中发布的内容，您可以将ASPX代码更改为以下任一项以使其正常工作：

使用您当前的ButtonField（Documentation）：

<asp:GridView ID="GridView1" runat="server" HorizontalAlign="Center"
    onselectedindexchanged="GridView1_SelectedIndexChanged">
    <Columns>
        <asp:ButtonField ButtonType="Button" Text="Select" CommandName="Select" />
    </Columns>
</asp:GridView>

使用自动生成（Documentation）：

<asp:GridView ID="GridView1" runat="server" HorizontalAlign="Center"
    onselectedindexchanged="GridView1_SelectedIndexChanged"
    AutoGenerateSelectButton="True">
</asp:GridView>

Answer 2

ButtonField的CommandName属性必须设置为“Select”才能触发SelectedIndexChanged事件。

<asp:ButtonField ButtonType="Button" Text="Select"  CommandName="Select" />

SelectedIndexChanged打开一个新表单

2 个答案: