如果字段中的文字显示＆＃34;否＆＃34;则更改datagridview中特定行的颜色。

Question

这是我的代码：

For Each row As DataGridViewRow In DataGridView1.Rows
        Dim value = Val(row.Cells(9).Value)
        If value = "no" Then
            row.DefaultCellStyle.BackColor = Color.Red
        End If
    Next

我一直收到这个错误：

System.InvalidCastException: 'Conversion from string "no" to type 'Double' is not valid.'

有什么想法吗？

提前致谢

Answer 1

请勿使用Val，因为这会将您的价值转换为双倍。使用ToString将其转换为字符串，然后将其与＆＃34; no＆＃34;进行比较

For Each row As DataGridViewRow In DataGridView1.Rows
    If row IsNot Nothing _
        AndAlso row.Cells IsNot Nothing _
        AndAlso row.Cells(9) IsNot Nothing Then
        If If(row.Cells(9).Value, "").ToString().ToUpper() = "NO" Then
            row.DefaultCellStyle.BackColor = Color.Red
        ElseIf row.Cells(9).Value.ToString().ToUpper() = "YES" Then
            row.DefaultCellStyle.BackColor = Color.Green
        End If
    End If
Next