But what result you get? Make sure that data are already there (gridData and columnData are filled with values) when you launch this method. I would fix the code with the following :
var headers:String = new String(); var newColumns:Array = new Array(); // flex loops are generally done this way (see http://livedocs.adobe.com/flex/2/docs/wwhelp/wwhimpl/common/html/wwhelp.htm? context=LiveDocs_Parts&file=00001831.html) var i:int; for (i = 0; i<columnData.length; i++) { var column:DataGridColumn = new DataGridColumn(columnData[i].name); column.dataField = columnData[i].name; // there wasn't [i] index here column.headerText = getheaderText(columnData[i]); // aren't you setting name/header in constructor? //headers = headers + getheaderText(columnData[i]) + ", "; // what is this for? newColumns.push(column); } dGrid.dataProvider = gridData; dGrid.columns = newColumns; // it's better to assign at the end, to avoid datagrid invalidations on every column added. -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Dominic Pazula Sent: Monday, January 21, 2008 9:04 PM To: [email protected] Subject: [flexcoders] Dynamically Generating Column Attributes for a Data Grid I tried to search for this but got a "server busy" error. I figured I would go ahead and post it. I appologize if this has been covered before. I'm trying to dynamically generate columns for my datagrid. I don't have prior knowledge of the column attributes before receiving the data. I get two ArrayCollection objects, one with the data (gridData) and one with the metadata about the columns (called columnData from here on). Here is the function I am trying to write: public function updateGridData():void{ var column:DataGridColumn; var headers:String = new String(); for (var i:int =0; i<columnData.length; i++){ column = new DataGridColumn(columnData[i].name); //column.dataField = columnData.name; column.headerText = getheaderText(columnData[i]); //headers = headers + getheaderText(columnData[i]) + ", "; dGrid.columns.push(column); } dGrid.dataProvider = gridData; //mx.controls.Alert.show("Updated the DataGrid. Headers SHOULD be: " + headers); } The "getheaderText()" function returns the header text value based on a user selection (description or name). What am I doing wrong here? Thanks Dominic -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links
