Dynamic FieldName for GridViewDataTextColumn (<%# Eval(...)%>)

Question

I have an in-memory DataSet bound to an ASPxGridView where the column names are determined by a variable. Now I would prefer to assign the FieldName of the columns in the markup with the value of the corresponding variable, but <%#Eval(...)%> throws the following error.

Parser Error Message: Databinding expressions are only supported on objects that have a DataBinding event. DevExpress.Web.ASPxGridView.GridViewDataTextColumn does not have a DataBinding event.

Is it possible to assign the FieldName-Attribute of a GridViewDataTextColumn with a variable in the markup?

From

<dx:GridViewDataTextColumn Caption="Product" FieldName="product_name">

To

<dx:GridViewDataTextColumn Caption="Product" FieldName="<%# Eval("ProductFieldName") %>">

Mikhail · Accepted Answer · 2021-07-12T15:18:08.847

-1

No, in general. The GridViewDataTextColumn is a hierarchycal (non Data-Bound) element and it is not contained into a Data-Bound container.

According to the exception's message, I believe this is a common situation for such an ASP.NET controls:

DataBinding expressions are only supported on objects that have a DataBinding event.

I believe it is possible to specify the required properties and assign column FieldName at runtime as it is illustrated here.

edited Jul 12 '21 at 15:18

answered Mar 28 '12 at 20:50

Mikhail

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Thanks :) I already knew the way doing it at runtime. I thought I missed something so it could be done the other way directly in the markup. – Andreas Mar 29 '12 at 06:40

Dynamic FieldName for GridViewDataTextColumn (<%# Eval(...)%>)

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