datagridview filter

[arkiboys]

//this is in the form.cs...
//step 1
filterDataGridView1.DataSource = dataSet.Tables[0];

//this is in a separate class...
//step2
private static DataTable dataSource = null;

if (dataSource == null)
dataSource = (DataTable)this.DataSource;


The above works where in the form.cs I use the datasource to be the a datatable i.e. in step 1 above

Question:
If I change the datasource in step 1 to be BindingSource i.e.

DataView defaultView = dataSet.Tables[0].DefaultView;
BindingSource bs = new BindingSource(); //used for creating the autofilter...
bs.DataSource = defaultView;
filterDataGridView1.DataSource = null;
filterDataGridView1.DataSource = bs;

Then my code above in step 2 will fail.
So, how can the code in step 2 be converted to bindingsource i.e
something like the following?


filterDataGridView1.DataSource = (BindingSource)dataSet.Tables[0];

if (dataSource == null)
dataSource = (BindingSource)this.DataSource;

[jmcilhinney]

First up, there is no point binding the DefaultView. Just bind the DataTable. When you bind a DataTable the data comes from the DefaultView anyway. I'm willing to bet that your DataSet is useless too. Does it contain anything other than the one DataTable? If not, why not just use a DataTable?

As for your question, it doesn't really make sense because you haven't provided us with a clear picture of the relationships. That said, if you want to get access to the BindingSource then you can get it from the grid's DataSource and if you want DataTable then you can get it from the BindingSource's DataSource. It's no more complex than that. That's where you put them in in the first place so that's where you get them out again.