GridView - Getting the column datatype? in UI for Silverlight

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GridView - Getting the column datatype?

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GridView

This is a migrated thread and some comments may be shown as answers.

7 Answers, 1 is accepted

answered on 19 Aug 2015, 06:19 PM

First off, I apologize, this was meant for the WPF forum, but I posted too quickly. Please move it if you need to.

I am using some of the DataAnnotations attributes, and they work wonderfully. My hope was to set which properties would aggregate with a format string with a custom attribute. Something like below.

[Display(Name = "Trade Amount")]

[DisplayFormat(DataFormatString = "{0:C}")]

[DisplayAggregate(AggregateFunction.Sum, ResultFormatString = "Total: {0:C}")]

[DisplayAggregate(AggregateFunction.Min, ResultFormatString = "Min: {0:C}")]

public double Amount { get; set; }

I actually got this working after posting, but it is a bit of a workaround. In the AutoGeneratingColumn event, I match the column name against the RadGridView item and pull the attributes from there, not the column.datatype. But if there is a more elegant solution, I wouldn't mind changing my existing work.
Cheers.

private void ResultsGridView_OnAutoGeneratingColumn(object sender, GridViewAutoGeneratingColumnEventArgs e)

{

var column = e.Column as GridViewDataColumn;

if (column == null || ResultsGridView.Items.Count == 0) return;

var propName = column.DataMemberBinding.Path.Path;

var props = ResultsGridView.Items[0].GetType().GetProperties();

var aggregates = (from prop in props where prop.Name == propName select (DisplayAggregate[]) prop.GetCustomAttributes(typeof (DisplayAggregate), false)).FirstOrDefault();

AddAggregatesToGridColumn(aggregates, column);

}