如何在 WPF 中使用 Datagrid 更新数据库

Question

I would like to update Database when any Cell is updated in the GridView on particular button click.

Database connection

    private void databaseBindingToGrid()
    {
     connetionString = @"initial catalog = Test; integrated security = SSPI; data source = KITS13AUG2019-I\JAGDEESH_SQL;";
     conSql = new SqlConnection(connetionString);
     conSql.Open();
     cmd = new SqlCommand();
     cmd.CommandText = "Select * from AGENTS";
     cmd.Connection = conSql;
     adpt = new SqlDataAdapter(cmd);
     dt = new DataTable("AGENTS");
     adpt.Fill(dt);
     datGridView.ItemsSource = dt.DefaultView;
     }

I tried like this but not working

    private void C1ToolbarButton_Click(object sender, RoutedEventArgs e)
    {
           adpt.Update(dt);
           MessageBox.Show("Updated");
    }

Answer 1

You must declare a connection class which is return your connection open.

public SqlConnection Connection()
    {
      connetionString = @"initial catalog = Test; integrated security = SSPI;    
      data source = KITS13AUG2019-I\JAGDEESH_SQL;";
      conSql = new SqlConnection(connetionString);
      conSql.Open();

      return conSql;
    }

After that you declare Datagridview elements in your form load action.

public void FillDataGridView()
{
   cmd = new SqlCommand();
   cmd.CommandText = "Select * from AGENTS";
   cmd.Connection = Connection();
   adpt = new SqlDataAdapter(cmd);
   dt = new DataTable("AGENTS");
   adpt.Fill(dt);
   datGridView.ItemsSource = dt.DefaultView;
}

And now you can use

private void C1ToolbarButton_Click(object sender, RoutedEventArgs e)
    {
           //it is call your data grid view when you click button
           FillDataGridView();
    }