I've looking around a lot. No examples were good for me (obviously for my non-capacity).

I have a simple form, where user choose some item from a combobox. After this, a datagridview show the data related to values in combobox.

I only need to make some changes in datagridview, and then update the database.

I've try with sqlparameter, with the single "update" query, but still doesnt work.

Very thx and hope somebody can help me.

If you use a tableAdapter, you may try this

this.Validate();

this.customersBindingSource.EndEdit(); 

this.customersTableAdapter.Update(this.northwindDataSet.Customers);

Or sometinglike this

cm =(CurrencyManager)this.BindingContext[northwindDataSet,"Customers"];

northwindDataSet is a dataset while "customers" is table in it.

Please tell me whether they work or not.

If you use a tableAdapter, you may try this

this.Validate();

this.customersBindingSource.EndEdit(); 

this.customersTableAdapter.Update(this.northwindDataSet.Customers);

Or sometinglike this

cm =(CurrencyManager)this.BindingContext[northwindDataSet,"Customers"];

northwindDataSet is a dataset while "customers" is table in it.

Please tell me whether they work or not.