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z;?P(ZnWgVaw>^*3nB{$QV+p)@_u1@I{4*apGWO1_9Wx>pQ%O`VfUf?Vb5(-CT+vJ z`w|vHf$R0^k@_7{rWNn$<8oo=la3XB@1=#6$}9H~-TTbprd8pm<=f}A!{heS(!)RU zioa|}avE+HVn*!!?-$@!EkN0h%V%O?WS-9Ek7ZOU0b&+_JWkCL6;O(D@r}E>P#d9M z5cnWx{aqW%MWhHCv^!n8+^S4R=dY;dnd+eoL5c#hw(u|wtD zCyWypzhl#5!=?xT=f>*3O0w+%UBzD141TyH4>xI#W5TW~lpp%sWyUDL7fFYJaME`) z%R-w%18Rr;UKC^us3CB0rFD5o?0ZhRiXT<$hi8eXM`ZzRBmF>2saOj*sOcCQ=8F(< z1eG3*<|gP5$WDaj61Sr!mnm}haxei}yGQ)m<3)5bTKeEm3mA`NS{e%BLI@b;dF!c5ksb^dX81(io zx`r^29ymq+7W@(63@8!xhrO|8hf@U_RTXqPP&UK^Ac>f)(`E=cC@!&*VdkW*YVfbA&xW^w8j5KPdMG%0Ue?1>aSdfP+1$?~ksSz@)D464{H1VcDU3 zF+q>-;A~$clC9;xvuS{cQ%LyOruvHz=#}OjYiy4M_f4|)>0(=t0CoY3p4O1EvlaL< n?fH2vCnf{ 0 && e.RowIndex == 0) + { + int colIndex1 = this.gridDataBoundGrid1.Binder.NameToColIndex("Column2"); + if(colIndex1 == e.ColIndex) + { + e.Style.Description = "Check"; + e.Style.CellValue = CheckBoxValue; + e.Style.CellValueType = typeof(bool); + e.Style.CheckBoxOptions = new GridCheckBoxCellInfo(true.ToString(), false.ToString(), "", true); + e.Style.CellType = "CheckBox"; + e.Style.CellAppearance = GridCellAppearance.Raised; + e.Style.Enabled = true; + } + } +} + +private void Model_SaveCellInfo(object sender, GridSaveCellInfoEventArgs e) +{ + if(e.ColIndex > 0 && e.RowIndex == 0) + { + int colIndex1 = this.gridDataBoundGrid1.Binder.NameToColIndex("Column2"); + if(colIndex1 == e.ColIndex) + { + if(e.Style.CellValue != null) + CheckBoxValue = (bool)e.Style.CellValue; + } + } +} +``` + +#### VB + +``` vb +Private CheckBoxValue As Boolean = False +Private Sub Model_QueryCellInfo(ByVal sender As Object, ByVal e As GridQueryCellInfoEventArgs) + If e.ColIndex > 0 AndAlso e.RowIndex = 0 Then + Dim colIndex1 As Integer = Me.gridDataBoundGrid1.Binder.NameToColIndex("Column2") + If colIndex1 = e.ColIndex Then + e.Style.Description = "Check" + e.Style.CellValue = CheckBoxValue + e.Style.CellValueType = GetType(Boolean) + e.Style.CheckBoxOptions = New GridCheckBoxCellInfo(True.ToString(), False.ToString(), "", True) + e.Style.CellType = "CheckBox" + e.Style.CellAppearance = GridCellAppearance.Raised + e.Style.Enabled = True + End If + End If +End Sub + +Private Sub Model_SaveCellInfo(ByVal sender As Object, ByVal e As GridSaveCellInfoEventArgs) + If e.ColIndex > 0 AndAlso e.RowIndex = 0 Then + Dim colIndex1 As Integer = Me.gridDataBoundGrid1.Binder.NameToColIndex("Column2") + If colIndex1 = e.ColIndex Then + If e.Style.CellValue IsNot Nothing Then + CheckBoxValue = CBool(e.Style.CellValue) + End If + End If + End If +End Sub +``` + +In the following screenshot, the **CheckBox** is added to the Column header on the **GridControl** and **GridDataBoundGrid**. + +![Image showing checkbox on headercell](HeaderCellsWithCheckBox.png) \ No newline at end of file