c# - Binding a Datagrid Columnheader Backgroud to da datatable row -

i want color datagrid columnheader depending on row in datatable bound datagrid. how can this? method have used on datagrid.row not work, because there apparently no "column" property can ue.

i came this, can usethe whole datagrid in colorconverter, unable find way determine columnheader rendered.

xaml:

   <datagrid x:name="exceldatatable_exceldata">         <style targettype="datagridcolumnheader">             <setter property="background" value="{binding relativesource={relativesource ancestortype=datagrid}, converter={staticresource excelcolumncolorconverter}}"></setter>         </style>     </datagrid> 

code behind colorconverter:

public object convert(object value, type targettype, object parameter,   system.globalization.cultureinfo culture) {     var col = (system.data.datacolumn)value;     var colstateobj = col.table.rows[col.table.rows.count-1][col.columnname];     enums.rowstate colorvalue = (enums.rowstate)enum.parse(typeof(enums.rowstate), colstateobj.tostring());      switch (colorvalue)     {         case enums.rowstate.headerrow:             return brushes.gainsboro;         case enums.rowstate.isincluded:             return brushes.lightgreen;         case enums.rowstate.notincluded:             return brushes.lightsalmon;         default:             return brushes.azure;     } }  /// <summary> /// converts value of hidden color row color on data table. /// </summary> /// <param name="value">the value</param> /// <param name="targettype">the type of binding target.</param> /// <param name="parameter">the converter parameter.</param> /// <param name="culture">the culture</param> /// <returns> /// ethe converted value or null /// </returns> /// <exception cref="system.notimplementedexception">not implemented because not needed</exception> public object convertback(object value, type targettype, object parameter, system.globalization.cultureinfo culture) {     throw new notimplementedexception(); } 

i have foubnd solution, using multibinding:

xaml:

  <style targettype="datagridcolumnheader">                     <setter property="background">                         <setter.value>                             <multibinding converter="{staticresource excelcolumncolorconverter}">                                 <binding relativesource="{relativesource ancestortype=datagrid}"></binding>                                 <binding relativesource="{relativesource self}" path="column"></binding>                             </multibinding>                         </setter.value>                     </setter>                 </style> 

the converter:

 public class excelcolumncolorconverter : imultivalueconverter     {    public object convert(object[] value, type targettype, object parameter, system.globalization.cultureinfo culture)         {             if (!(value[1] == null))             {                 var dgrid = (datagrid)value[0];                 var colheader = ((datagridtextcolumn)value[1]).header.tostring();                  var dview = (system.data.dataview)dgrid.itemssource;                 var table = dview.table;                  var rowstateobj = table.rows[table.rows.count - 1][colheader];                 enums.rowstate colorvalue = (enums.rowstate)enum.parse(typeof(enums.rowstate), rowstateobj.tostring());                  switch (colorvalue)                 {                     case enums.rowstate.headerrow:                         return brushes.gainsboro;                     case enums.rowstate.isincluded:                         return brushes.lightgreen;                     case enums.rowstate.notincluded:                         return brushes.lightsalmon;                     default:                         return brushes.azure;                 }             }             else             {                 return null;             }          }