How to check whether a dataset has changes or not C#

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.NET2.0

C#2.0

C#

.NET

Hi friends,
I use diffgrams to find the changes made to a datatable and update my table.

But I need to check my dataset for changes and then updates if it has changes.

I tried the following code but its not effective


Let us consider Form frm and Datatable datatable as input

if (dataTable == null)
    return false;

frm.BindingContext[dataTable].EndCurrentEdit();
if (dataTable.GetChanges() == null)
    return false;
return true;

It works but if I've undone any changes for example in Checkbox grid I unchecked the output is returned as changed.

Please help me to get rid of this problem