DataGridview不会更新/删除

Question

I'm using an access database in a C# project. I also have a DataGridView to display and edit the table. It works fine when I'm adding a new line but I get an exception when deleting/editting an existing line.
Update requires a valid DeleteCommand when passed DataRow collection with deleted rows.
the relavent Code:

private void updateB_Click(object sender, EventArgs e)
{
    this.complaintsTableAdapter.Update(this.databaseDataSet.complaints);
    this.complaintsTableAdapter.Fill(this.databaseDataSet.complaints);

}  

Answer 1

you must set some settings in complaintsTableAdapter
in TableAdpater set Insert , Update , Delete Command or if you create table adapter automatically from designer can use
Create method to send updates directly to the database (GenerateDBDirectMethods)

this can fix your problem