Xaf: modifying chart at runtime

For example, modify the chart in the Code and save the modification without calling Wizard.

You can add/delete/hide series and change the chart style.

Using system; using system. text; using system. io; using devexpress. expressapp. chart. win; using devexpress. expressapp. chart; using devexpress. xtracharts; namespace dynamicchartsolution. module. win {public class chartmanagerwin {private chartcontrol; private imodelchartlistview chartmodel; private seriesbuilder; // <summary> // method for creating chartmanagerwin in viewcontroller: // chartcontrol C C = (listview) view ). editor as chartlisteditor ). chartcontrol // imodelchartlistview M = (imodelchartlistview) view. model // new chartmanagerwin (CC, m) /// </Summary> /// <Param name = "control"> </param> /// <Param name = "model"> </param> Public chartmanagerwin (chartcontrol control, imodelchartlistview model) {This. chartcontrol = control; this. chartmodel = model;} // <summary> // use seriesbuilder to create a se Ries /// </Summary> /// <returns> </returns> Public seriesbuilder getseriesbuilder () {return builder = new seriesbuilder ();} public seriesbuilder getseriesbuilder (string seriesname, devexpress. xtracharts. viewtype) {return builder = new seriesbuilder (seriesname, viewtype );} /// <summary> /// Save the chart changes to the Model /// </Summary> /// <Param name = "model"> </param> Public void savechanges () {memory Stream MS = new memorystream (); chartcontrol. savetostream (MS); chartmodel. chartsettings. settings = encoding. utf8.getstring (Ms. toarray ());} /// <summary> /// change the chart display style /// </Summary> /// <Param name = "style"> </param> Public void changestyle (devexpress. xtracharts. viewtype style) {foreach (series S in chartcontrol. series) {S. changeview (style) ;}savechanges () ;}// note that if the added series and current chart styles are different, they are not displayed. Public void addseries (Params series [] series) {chartcontrol. series. addrange (series); savechanges ();} public void removeseries (string seriesname) {If (chartcontrol. series [seriesname]! = NULL) chartcontrol. series. remove (chartcontrol. series [seriesname]); savechanges ();} public void setvisibility (string seriesname, bool visible) {chartcontrol. series [seriesname]. visible = visible;} public class seriesbuilder {private Series; Public series {get {return series;} public seriesbuilder () {series = new series ();} public seriesbuilder (string seriesname, devexpress. xtracharts. viewtype) {series = new series (seriesname, viewtype);} public string name {set {series. name = value ;}} public devexpress. xtracharts. viewtype {set {series. changeview (value) ;}} public object datasource {set {series. datasource = value ;}} Public String argumentdatamember {set {series. argumentdatamember = value ;}} public devexpress. xtracharts. scaletype argumentscaletype {set {series. argumentscaletype = value ;}} public devexpress. xtracharts. scaletype valuescaletype {set {series. valuescaletype = value ;}} Public String valuedatamember {set {series. valuedatamembers. addrange (value) ;}} Public String summaryfunction {set {series. summaryfunction = value ;}} public void adddatafilter (string columnname, string columntypename, datafiltercondition condition, object Value) {series. datafilters. add (columnname, columntypename, condition, value );}}}