Question

我需要在datagridview中更改行的颜色，但我的代码对我不起作用。我总是收到一个错误，上面写着“名为Quantity的列：无法找到。参数名称：columnName”

这是我的代码：

Private Sub DataGridView1_CellFormatting(ByVal sender As Object, ByVal e As DataGridViewCellFormattingEventArgs) Handles DataGridView1.CellFormatting
    For i As Integer = 0 To Me.DataGridView1.Rows.Count - 1
        If Me.DataGridView1.Rows(i).Cells("Quantity:").Value < 5 Then
            Me.DataGridView1.Rows(i).Cells("Quantity:").Style.ForeColor = Color.Red
        End If
    Next
End Sub

请帮我修理一下。谢谢。

Answer 1

这可能会有所帮助

使用＆＃34; RowPostPaint＆＃34;事件
列的名称不是＆＃34;标题＆＃34;列。您必须转到DataGridView =＆gt;的属性。然后选择column =＆gt;然后寻找＆＃34;名称＆＃34;属性

我将其转换为C＃（＆＃39;来自：http://www.dotnetpools.com/Article/ArticleDetiail/?articleId=74）

    Private Sub dgv_EmployeeTraining_RowPostPaint(sender As Object, e As System.Windows.Forms.DataGridViewRowPostPaintEventArgs) 
    Handles dgv_EmployeeTraining.RowPostPaint

    If e.RowIndex < Me.dgv_EmployeeTraining.RowCount - 1 Then
        Dim dgvRow As DataGridViewRow = Me.dgv_EmployeeTraining.Rows(e.RowIndex)

    '<== This is the header Name
        'If CInt(dgvRow.Cells("EmployeeStatus_Training_e26").Value) <> 2 Then  


    '<== But this is the name assigned to it in the properties of the control
        If CInt(dgvRow.Cells("DataGridViewTextBoxColumn15").Value.ToString) <> 2 Then   

            dgvRow.DefaultCellStyle.BackColor = Color.FromArgb(236, 236, 255)

        Else
            dgvRow.DefaultCellStyle.BackColor = Color.LightPink

        End If

    End If

End Sub

Answer 2

我修正了错误。刚删除此行中的“值”：

If drv.Item("Quantity").Value < 5  Then

所以它看起来像

If drv.Item("Quantity") < 5 Then

Answer 3

试试这个（注意：我现在没有Visual Studio，所以代码是我的存档中的复制粘贴（我还没有测试过）：

Private Sub DataGridView1_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles DataGridView1.CellFormatting
    Dim drv As DataRowView
    If e.RowIndex >= 0 Then
        If e.RowIndex <= ds.Tables("Products").Rows.Count - 1 Then
            drv = ds.Tables("Products").DefaultView.Item(e.RowIndex)
            Dim c As Color
            If drv.Item("Quantity").Value < 5  Then
                c = Color.LightBlue
            Else
                c = Color.Pink
            End If
            e.CellStyle.BackColor = c
        End If
    End If
End Sub

Answer 4

只需移除:中的Quantity即可。确保您的属性与代码中包含的参数相同，如下所示：

Private Sub DataGridView1_CellFormatting(ByVal sender As Object, ByVal e As DataGridViewCellFormattingEventArgs) Handles DataGridView1.CellFormatting
    For i As Integer = 0 To Me.DataGridView1.Rows.Count - 1
        If Me.DataGridView1.Rows(i).Cells("Quantity").Value < 5 Then
            Me.DataGridView1.Rows(i).Cells("Quantity").Style.ForeColor = Color.Red
        End If
    Next
End Sub

Answer 5

If drv.Item("Quantity").Value < 5  Then

使用它来喜欢这个

If Cint(drv.Item("Quantity").Value) < 5  Then

Answer 6

使用 CellFormating事件和 e 参数：

If CInt(e.Value) < 5 Then e.CellStyle.ForeColor = Color.Red

Answer 7

DATE_FORMAT(STR_TO_DATE(monthNumber, '%m'), '%b')

根据单元格值的数量更改DataGridView中的行颜色

7 个答案: