GridUnboundColumnType Enum

Lists values that specify possible data types of unbound columns.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v21.1.dll

NuGet Package: DevExpress.Blazor

Declaration

public enum GridUnboundColumnType

Members

Name	Description
Bound	The column is bound to a data field (FieldName). This field specifies the column data type.
Integer	The column contains Int32 values.
Decimal	The column contains Decimal values.
DateTime	The column contains DateTime values.
String	The column contains String values.
Boolean	The column contains Boolean values.
Object	The column contains Object values.

Related API Members

The following properties accept/return GridUnboundColumnType values:

• DxGridDataColumn.UnboundType
• IGridDataColumn.UnboundType

Remarks

The following example illustrates how to create two unbound columns: “Discontinued” and “Total Price”. The UnboundType property specifies the data types of the unbound columns (Boolean and Decimal). To display the “Discontinued” column values as check boxes, use the DxCheckBox<T> component within the column’s cell template (CellDisplayTemplate). The UnboundColumnData event allows you to evaluate data for the unbound columns.

<DxGrid Data="GridDataSource"
    UnboundColumnData="Grid_CustomUnboundColumnData">
    <Columns>
        <DxGridDataColumn FieldName="ProductId" DisplayFormat="d" />
        <DxGridDataColumn FieldName="UnitPrice" />
        <DxGridDataColumn FieldName="Quantity" />
        <DxGridDataColumn FieldName="Discount" DisplayFormat="p0" />
        <DxGridDataColumn FieldName="Discontinued" UnboundType="GridUnboundColumnType.Boolean">
            <CellDisplayTemplate>
                <DxCheckBox Checked="@((bool)context.Value)" />
            </CellDisplayTemplate>
        </DxGridDataColumn>
        <DxGridDataColumn FieldName="TotalPrice"
                      DisplayFormat="c"
                      UnboundType="GridUnboundColumnType.Decimal" />
    </Columns>
</DxGrid>
@* ... *@
@code {

    object GridDataSource { get; set; }

    protected override void OnInitialized()
    {
        GridDataSource = Northwind.OrderDetails
            .Include(i => i.Product)
            .ToList();
    }

    void Grid_CustomUnboundColumnData(GridUnboundColumnDataEventArgs e)
    {
        if(e.FieldName == "TotalPrice")
        {
            var unitPrice = Convert.ToDecimal(e.GetRowValue("UnitPrice"));
            var quantity = Convert.ToDecimal(e.GetRowValue("Quantity"));
            var discount = Convert.ToDecimal(e.GetRowValue("Discount"));

            e.Value = quantity * unitPrice * (1 - discount);
        }

        if(e.FieldName == "Discontinued")
        {
            e.Value = Convert.ToDecimal(e.GetRowValue("Discount")) == 0;
        }
    }
}