resizeColumn
This method allows you to resize a column of the RadGrid. The method accepts two arguments - the first argument is the indexof the table column, while the second one determines the new width of the column. Additionally you have to enable the AllowColumnResizeproperty. Generally used when there is a need to set a width of a column on the client.
function onDataBound(sender, args) {
var masterTableView = sender.get_masterTableView();
masterTableView.resizeColumn(0, 700);
}
<telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server" AllowPaging="true" AllowSorting="true"
AllowFilteringByColumn="true" PageSize="5">
<MasterTableView ClientDataKeyNames="ProductID" CommandItemDisplay="Top">
<Columns>
<telerik:GridBoundColumn DataField="ProductID" HeaderText="ProductID" UniqueName="ProductID"
DataType="System.Int32" />
<telerik:GridBoundColumn DataField="ProductName" HeaderText="ProductName" UniqueName="ProductName"
DataType="System.String" />
<telerik:GridBoundColumn DataField="CategoryID" HeaderText="CategoryID" UniqueName="CategoryID"
DataType="System.Int32" />
<telerik:GridNumericColumn DataField="UnitPrice" DataType="System.Decimal" NumericType="Currency"
HeaderText="UnitPrice Numeric" SortExpression="UnitPrice">
</telerik:GridNumericColumn>
<telerik:GridNumericColumn DataField="UnitsInStock" HeaderText="UnitsInStock" UniqueName="UnitsInStock"
DataType="System.Int16" />
<telerik:GridCheckBoxColumn DataField="Discontinued" HeaderText="Discontinued" UniqueName="Discontinued"
DataType="System.Boolean" />
</Columns>
</MasterTableView>
<ClientSettings>
<Resizing AllowColumnResize="true" />
<ClientEvents OnDataBound="onDataBound" />
<DataBinding Location="http://demos.kendoui.com/service/Northwind.svc" ResponseType="JSONP">
<DataService TableName="Products" Type="OData" />
</DataBinding>
</ClientSettings>
</telerik:RadGrid>