About gridcontrol and column chooser - devexpress

Question

I have a form that form has a gridcontrol then when I click column chooser I will add a any column that added column will remove on a gridcontrol when i close the form finally I do not want to lose that added column I hope I can explain what I want to do thank you for everything.

Answer 1

Please follow this example for customizing the columns :
<dx:ASPxGridView ID="grid" ClientInstanceName="grid" runat="server" DataSourceID="CustomersDataSource"
KeyFieldName="CustomerID" Width="100%">
<Columns>
<dx:GridViewDataColumn FieldName="ContactName" VisibleIndex="0" ShowInCustomizationForm="true" />
<dx:GridViewDataColumn FieldName="CompanyName" VisibleIndex="1" ShowInCustomizationForm="true" />
<dx:GridViewDataColumn FieldName="City" VisibleIndex="2" ShowInCustomizationForm="true" />
<dx:GridViewDataColumn FieldName="Region" Visible="false" ShowInCustomizationForm="true" />
<dx:GridViewDataColumn FieldName="Country" VisibleIndex="3" ShowInCustomizationForm="true" />
</Columns>
<Templates>
<PagerBar>
<table width="100%">
<tr>
<td style="width: 50%">
<dx:ASPxGridViewTemplateReplacement ID="Pager" runat="server" ReplacementType="Pager" />
</td>
<td align="right">
<dx:ASPxButton ID="btnCustomizationWindow" runat="server" CssFilePath="~/App_Themes/Office2010Blue/{0}/styles.css"
AutoPostBack="False" Text="Show/Hide Columns" Width="150px" ClientInstanceName="btnCustomizationWindow"
CssPostfix="Office2010Blue" SpriteCssFilePath="~/App_Themes/Office2010Blue/{0}/sprite.css">
<ClientSideEvents Click="btnCustomizationWindow_Click" />
</dx:ASPxButton>
</td>
</tr>
</table>
</PagerBar>
</Templates>
<Settings ShowGroupPanel="True" />
<SettingsLoadingPanel Mode="ShowOnStatusBar" />
<SettingsBehavior EnableCustomizationWindow="true" />
<SettingsCookies CookiesID="CookiesV1" Enabled="True" StoreColumnsVisiblePosition="true"
StoreColumnsWidth="true" StoreFiltering="False" StoreGroupingAndSorting="False"
StorePaging="False" /><%--This will store the column position and visibility--%>
</dx:ASPxGridView>
Script:
<script type="text/javascript">
function btnCustomizationWindow_Click(s, e) {
if(grid.IsCustomizationWindowVisible())
grid.HideCustomizationWindow();
else
grid.ShowCustomizationWindow();
}
</script>
Note:
If you wish to hide some columns for customization set the property :
ShowInCustomizationForm="false"
Hope this helps.