devgridControl根据单元格里的内容控制背景色

第一种方式   用添加GridFormatRule 规则

GridColumn colRate &＃61; gridView1.Columns["Rate"];
colRate.DisplayFormat.FormatType &＃61; FormatType.Numeric;
colRate.DisplayFormat.FormatString &＃61; "0.00%";GridFormatRule gridFormatRule1 &＃61; new GridFormatRule();
gridFormatRule1.Name &＃61; "Format0";
FormatConditionRuleValue ormatConditionRuleValue1 &＃61; new
FormatConditionRuleValue();
ormatConditionRuleValue1.Value1 &＃61; 0.98;
ormatConditionRuleValue1.Condition &＃61; FormatCondition.Less;ormatConditionRuleValue1.Appearance.BackColor &＃61; Color.Red;
ormatConditionRuleValue1.Appearance.BackColor2 &＃61; Color.Red;
ormatConditionRuleValue1.Appearance.Options.UseBackColor &＃61; true;
gridFormatRule1.Rule &＃61; ormatConditionRuleValue1;
gridFormatRule1.Column &＃61; colRate; //应用于该列
this.gridView1.FormatRules.Add(gridFormatRule1);

第二种方式  用RowCellStyle方法手动判断&＃xff08;行和单元格标红都可以&＃xff09;

private void gridView1_RowCellStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowCellStyleEventArgs e){string val &＃61; gridView1.GetRowCellValue(e.RowHandle, "strRate") !&＃61; null ? gridView1.GetRowCellValue(e.RowHandle, "strRate").ToString() : "0";if (val !&＃61; null && val.Contains("%")){val &＃61; val.Replace("%", "");}double value;if (double.TryParse(val, out value) && value <98){e.Appearance.BackColor &＃61; Color.Red; //良率小于98%标红//e.Appearance.BackColor2 &＃61; Color.Red; //良率小于98%标红}}