Forms Data Controls :: Gridview Sort Expression - How To Reset A Gridview Or Prevent It From Doing A Sort

Sep 23, 2010

Just spent about 8 hours googling and looking through this forum for a solution on how to make sure that I can dynamically sort. Here is the situation.

I have 1 Gridview that displays 10 different scenarios based on what button is clicked.

I am also returning only top 10 records. I am doing all of the data binding pragmatically. So I have BoundFields, HyperLinkFields etc.

I also want to sort some records. When I change DataSource SQL statement the gridview somehow remembers what the last sort value was and it errors out saying that value "x" cannot be sorted because it does not exists.

I tried this:

Tried setting gridview1.sqldatasourceid = null; gridview1.allowsorting = false; gridview1.databind();

Here I get an error that says that the data source does not support sorting? Doesnt it say gridview1.allowsorting = false;

I also tried gridview1.sort("", SortDirection.Ascending); This does nothin... except query my database one more time because i have a onSorting event that looks like this:


Here is an example of just one of those SLQ statements inside GetSQLQuery:


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runat="server" DataSourceID = "SqlDataSource1"
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[Code] ....

First time on page load 

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My program running good. But i try to add up-down icon on my gridView header. but if i make it, My break point should drop below "if comparison" For example; field.SortExpression=Category but every time CustomersGridView.SortExpression is empty when gridview.SortExp is not empty.

foreach (DataControlField field in CustomersGridView.Columns)
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