When a column is displayed conditionally, it's order is not preserved. In the code sample below, the ProductId column is the first column in the grid. When you click the checkbox to hide the column, it is removed. Click the checkbox again and the column reappears but it is the last column in the grid.
ADMIN EDIT: At the end of this post there is an attachment with a workaround through a custom column chooser.
<input type="checkbox" @onchange="@ToggleColumn" />
<TelerikGrid Data=@GridData>
<GridColumns>
@if (ShowColumn)
{
<GridColumn Field=@nameof(Product.ProductId) Title="Id" />
}
<GridColumn Field=@nameof(Product.ProductName) Title="Product Name" />
<GridColumn Field=@nameof(Product.UnitPrice) Title="Unit Price">
<Template>
@(String.Format("{0:C2}", (context as Product).UnitPrice))
</Template>
</GridColumn>
</GridColumns>
</TelerikGrid>
@code {
public IEnumerable<Product> GridData { get; set; }
bool ShowColumn = true;
protected override void OnInitialized()
{
List<Product> products = new List<Product>();
for (int i = 0; i < 20; i++)
{
products.Add(new Product()
{
ProductId = i,
ProductName = "Product" + i.ToString(),
UnitPrice = (decimal)(i * 3.14)
});
}
GridData = products.AsQueryable();
}
private void ToggleColumn(ChangeEventArgs args)
{
ShowColumn = (bool)args.Value;
}
public class Product
{
public int ProductId { get; set; }
public string ProductName { get; set; }
public decimal UnitPrice { get; set; }
}
}
