How to sort the grid view whose column is listing integers

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I am sorting the grid using DataView's "Sort" property. I am passing sort expression and the order in which the grid is to be sorted(ASC or DESC). But the problem is, since the column on which I am sorting the grid is listing the intergers, the sorting is happening as if it is a string. But I need integer sorting rather string sorting on that column.

The grid displays below as ascending order(string sorting)
55
77
8

But I need the columns to be displayed like this(Integer sorting)
8
55
77

What would be the solution

Posted 17-Feb-11 0:11am

Raghavendra HG

Updated 11-Sep-19 23:21pm

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OriginalGriff · Answer 1 · 2011-02-17T00:32:00

Solution 1

You need to handle the SortCommand event: MSDN[^] explains how - look under "Specifying Custom Sorting" for details

Posted 17-Feb-11 0:32am

OriginalGriff

Comments

Raghavendra HG 17-Feb-11 6:52am

I have used custom sorting only. Sorting is happening with no problem. But string sorting is happening. I need integer sorting.

Michael Waguih · Answer 2 · 2011-02-17T00:40:00

Solution 2

Hi Raghavendra HG,

Be sure your entry to the datagridview is numeric not string data
If not you must casting it before ordering.

I hope this helps you,
:)

Posted 17-Feb-11 0:40am

Michael Waguih

SunilChavan1 · Answer 3 · 2011-02-17T00:45:00

Hi!
You have to first set property AllowSorting="True" and then generate event OnSorting="gridview_Sorting".
And then apply sorting on Datasource and Bind the data as per your sort order and column.

And for sorting dataview u can use Lambda Expression

DataView sorted = table.ApplySort((r, r2) =>
{
return ((int)r["IntValue"]).CompareTo(((int)r2["IntValue"]));
});

and then write commeon class for sorting ..
Cheers! :-D

Thank You!

Raghavendra HG · Answer 4 · 2011-02-17T03:30:00

Solution 4

Hi thank you for all your replies. I tried the below one.

dt.Columns.Add("SOWId", typeof(int));

You need to specify the type of the item template values before binding the data into data table by using 'typeof' keyword.

This solved the problem... :)

Posted 17-Feb-11 3:30am