Devexpress grid databar

            GridFormatRule gridFormatRule = new GridFormatRule();
            FormatConditionRuleDataBar formatConditionRuleDataBar = new FormatConditionRuleDataBar();
            gridFormatRule.Column = gridView1.Columns["Bakiye"];
            formatConditionRuleDataBar.PredefinedName = "Blue Gradient";
            gridFormatRule.Rule = formatConditionRuleDataBar;
            this.gridView1.FormatRules.Add(gridFormatRule);