How to get the Save buton of a dropped table from DB to work

Question

Hey!

 

I'm pretty new to C# and just accomplished a DB with a Table. If i drop the Table ( details) onto a Form, it automatically gives me a toolbar and the Label / Textboxes of my table.

 

In the toolbar there is a Save button, but this isnt working ( for me?)

 

so im wondering how i can change the code to get it to work?

 This is the automatically inserted code:

 

private void kundenBindingNavigatorSaveItem_Click(object sender, EventArgs e)
{
    this.Validate();
    this.kundenBindingSource.EndEdit();
    this.tableAdapterManager.UpdateAll(this.kundenDataSet1);

}

 

 I am also okay with a source to try to learn it myself.

Im using Visual Studio 2017 Enterprise Edition.