c# - 数据的颜色 devex xtragrid 行大于一个值

Question

当我尝试为约束值着色行时，由于字符串值如下所示：

private void gvTerbiyedekiDispolar_RowStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowStyleEventArgs e)
    {
        GridView View = sender as GridView;
        if (e.RowHandle >= 0)
        {
            string category = View.GetRowCellDisplayText(e.RowHandle, View.Columns["fire"]);
            if (category == "0,10")
            {
                e.Appearance.BackColor = Color.LightGoldenrodYellow;                   
            }               
        }
    }

但是如果我尝试“为大于 0.1 的值着色”，它会给我类似这段代码的运行时错误

 private void gvTerbiyedekiDispolar_RowStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowStyleEventArgs e)
    {
        GridView View = sender as GridView;
        if (e.RowHandle >= 0)
        {
            double category = Convert.ToDouble(View.GetRowCellDisplayText(e.RowHandle, View.Columns["fire"]));
            if (category > 0.10)
            {
                e.Appearance.BackColor = Color.LightGoldenrodYellow;                   
            }               
        }
    }

我该怎么办 ？

Answer 1

我将 NULL 值替换为 0ISNULL并且没关系。