ListBoxItemTextCellPreparedEventArgs.Column Property

Gets the column that owns a cell that is about to be processed.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v24.1.dll

NuGet Package: DevExpress.Web

Declaration

C#

public ListBoxColumn Column { get; }

VB.NET

Public ReadOnly Property Column As ListBoxColumn

Property Value

Type	Description
ListBoxColumn	An ListBoxColumn object that is the processed column.

Remarks

If the editor has no columns, the Column property returns null.

Example

The following example illustrates how to customize the appearance of combo box items.

C#

string GetItemTooltip(ListEditItem item) {
    return string.Format("Country: {0}\r\nCity: {1} \r\nAddress: {2}",
        item.GetFieldValue("Country"), item.GetFieldValue("City"), item.GetFieldValue("Address"));
}
protected void customersComboBox_ItemTextCellPrepared(object sender, ListBoxItemTextCellPreparedEventArgs e) { 
    if(e.Column.FieldName == "ContactName") {
        string contactTitle = e.Item.GetFieldValue("ContactTitle").ToString();
        if(contactTitle == "Owner") {
            e.TextCell.CssClass += " owner";
            e.TextCell.ToolTip = "Owner";
        }
    }
    if(e.Column.FieldName == "Phone")
        e.TextCell.CssClass += " phone";
}
protected void customersComboBox_ItemRowPrepared(object sender, ListBoxItemRowPreparedEventArgs e) {
    e.Row.ToolTip = GetItemTooltip(e.Item);
}

ASPX

<dx:ASPxComboBox ID="customersComboBox" runat="server" DataSourceID="CustomersDataSource" ValueField="CustomerID"
    ValueType="System.String" TextFormatString="{0}" EnableCallbackMode="true" CallbackPageSize="30"
    OnItemTextCellPrepared="customersComboBox_ItemTextCellPrepared" OnItemRowPrepared="customersComboBox_ItemRowPrepared">
    <Columns>
        <dx:ListBoxColumn FieldName="ContactName" Width="150" /> 
        <dx:ListBoxColumn FieldName="CompanyName" Width="200" /> 
        <dx:ListBoxColumn FieldName="Country" />
        <dx:ListBoxColumn FieldName="Phone" /> 
    </Columns>
</dx:ASPxComboBox>
<ef:EntityDataSource runat="server" ID="CustomersDataSource" ContextTypeName="NorthwindContext" 
    EntitySetName="Customers" OrderBy="it.ContactName, it.CompanyName" />