Question

所以我的文本框位于gridview的模板字段中。我想在页面加载时使用6个固定文本框。我认为那部分了。如果所有6个文本框都已填充，我想在选择下拉列值时添加新行。然后，下拉值将填充新行。我该怎么做？我知道基本的设置，但我只需要一些代码来检查是否所有文本框都已填满。

For Each row As GridViewRow In gvReq.Rows

    Dim Index As Integer = row.RowIndex
    Dim ReqText As TextBox = CType(gvReq.Rows(Index).FindControl("txtReqText"), TextBox)
    Dim chkReq As CheckBox = CType(gvReq.Rows(Index).FindControl("chkReq"), CheckBox)
    If ReqText.Text = "" Then
        ReqText.Text = reader("RequireExceptText").ToString
        chkReq.Checked = True
        If Regex.IsMatch(ReqText.Text, "_") Then
            Dim message As String = "The selected Requirement contains some blanks to fill."
            Dim sb As New System.Text.StringBuilder()
            sb.Append("<script type = 'text/javascript'>")
            sb.Append("window.onload=function(){")
            sb.Append("alert('")
            sb.Append(message)
            sb.Append("')};")
            sb.Append("</script>")
            ClientScript.RegisterClientScriptBlock(Me.GetType(), "alert", sb.ToString())
            ReqText.Focus()
        End If
        Exit For

    Else
        Dim dtCurrentTable As DataTable = DirectCast(ViewState("CurrentTable"), DataTable)
        For Each row2 As GridViewRow In gvReq.Rows
            If dtCurrentTable.Rows.Count >= 6 Then
                If ReqText.Text <> "" Then
                    AddNewRow()
                End If
            End If
            Exit For
        Next

    End If

Next

Answer 1

我找到了解决问题的方法。效果很好！

 Dim LastReqText As TextBox = DirectCast(gvReq.Rows(gvReq.Rows.Count - 1).FindControl("txtReqText"), TextBox)
        If LastReqText.Text <> "" Then
            AddNewRow()

        End If

        For i As Integer = 0 To gvReq.Rows.Count - 1

            Dim ReqText As TextBox = DirectCast(gvReq.Rows(i).FindControl("txtReqText"), TextBox)
            Dim chkReq As CheckBox = CType(gvReq.Rows(i).FindControl("chkReq"), CheckBox)

            If ReqText.Text = "" Then
                ReqText.Text = reader("RequireExceptText").ToString
                chkReq.Checked = True
                If Regex.IsMatch(ReqText.Text, "_") Then
                    Dim message As String = "The selected Requirement contains some blanks to fill."
                    Dim sb As New System.Text.StringBuilder()
                    sb.Append("<script type = 'text/javascript'>")
                    sb.Append("window.onload=function(){")
                    sb.Append("alert('")
                    sb.Append(message)
                    sb.Append("')};")
                    sb.Append("</script>")
                    ClientScript.RegisterClientScriptBlock(Me.GetType(), "alert", sb.ToString())
                    ReqText.Focus()
                End If
                Exit For

            End If

        Next

如何使用vb.Net检查是否所有GridView文本框都已填充

1 个答案: