如果字段中的文本為“否”，則更改datagridview中特定行的顏色

Question

這是我的代碼：

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

而且我不斷收到此錯誤：

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

有任何想法嗎？

提前致謝

Answer 1

不要使用Val因為這會將您的價值轉換為Double。 使用ToString將其轉換為字符串，然后將其與“ no”進行比較

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