Question

我有一个gridview，在页面加载时填充了UserId，serviceNo，forename和surname。该页面的id是一个查询字符串（NewTrain），它与不同的用户（UserId）一起批量插入到我的数据库表中。这我已经可以做了并且有效。但是我现在想要做的只是插入GridView的行，我们选中了一个复选框！

我已经尝试了一段时间并不断遇到问题。

我尝试了两种不同的场景，但遇到了相同的结果

任何人都可以帮忙吗？

1

    Protected Sub btnAttend_Click(ByVal sender As Object, ByVal e As EventArgs)

        Dim myTrain As String = Request.QueryString("NewTrainId")


        If myTrain IsNot Nothing Then
            Dim strQuery As String
            Dim cmd As SqlCommand


            For x As Integer = 0 To GridView1.Rows.Count - 1
                Dim chkBox As CheckBox = DirectCast(GridView1.Rows(x).FindControl("RowLevelCheckBox"), CheckBox)

                If chkBox.Checked Then
                    Dim lblUsr2 As HtmlInputHidden = CType(GridView1.Rows(x).FindControl("txtUsr"), HtmlInputHidden)
                    Dim userID As Guid = New Guid(lblUsr2.Value().ToString)
                    Dim HidTrainId As HtmlInputHidden = FindControlRecursive(MultiTabs, "txtTrainId")

                    strQuery = "Insert into userAssessmentTbl(tt_id, UserId)values(@NewTrainId, @UserId)"

                    cmd = New SqlCommand(strQuery)
                    cmd.Parameters.AddWithValue("@UserId", userID)
                    cmd.Parameters.AddWithValue("@NewTrainId", myTrain)

                    InsertUpdateData(cmd)


                End If

            Next
        End If


    End Sub

2

Protected Sub btnAttend_Click(ByVal sender As Object, ByVal e As EventArgs)

        Dim myTrain As String = Request.QueryString("NewTrainId")


        If myTrain IsNot Nothing Then
            Dim strQuery As String
            Dim cmd As SqlCommand


            For Each rowItem As GridViewRow In GridView1.Rows


                Dim chkBox As CheckBox = DirectCast(rowItem.FindControl("RowLevelCheckBox"), CheckBox)
                If chkBox IsNot Nothing AndAlso chkBox.Checked Then

                    Dim lblUsr2 As HtmlInputHidden = CType(rowItem.FindControl("txtUsr"), HtmlInputHidden)
                    Dim userID As Guid = New Guid(lblUsr2.Value().ToString)
                    Dim HidTrainId As HtmlInputHidden = FindControlRecursive(MultiTabs, "txtTrainId")

                    strQuery = "Insert into userAssessmentTbl(tt_id, UserId)values(@NewTrainId, @UserId)"

                    cmd = New SqlCommand(strQuery)
                    cmd.Parameters.AddWithValue("@UserId", userID)
                    cmd.Parameters.AddWithValue("@NewTrainId", myTrain)

                    InsertUpdateData(cmd)

                End If

            Next
        End If


    End Sub

Answer 1

这是在C＃中，但您可以将其转换为vb.net：

            foreach ( ListItem li in your_ check_box_list.Items )
            {


                if (li.Selected == true)
                {
                    // execute code 
                }

            }

我在vb.net中发现这一点，不确定它是否有效：

For Each selecteditem As [Object] In Listbx.SelectedItems
//Your code on each item
Next

在ASP.NET GridView中检索使用CheckBox选择的行

1 个答案: