C＃更新表適配器不更新數據庫

Question

我正在用OleDBCommandBuilder和類型數據集更新數據庫時遇到問題。當我用準備好的面板編輯我的數據庫時，更新後我看到更改發生在DataGridView中。但是，這些更改是暫時的，因爲當我重新啓動我的應用程序時，更改會從數據庫中取回原始信息。任何人都可以看到下面給出的代碼有問題嗎？

var row = this.dataGridViewProducts.SelectedRows[0]; 
     DataRowView rowView = row.DataBoundItem as DataRowView; 
     ProductsRow productRow = rowView.Row as ProductsRow; 
     if (row != null) 
     { 
      ProductForm formEdit = new ProductForm(ref productRow); 
      bool success = false; 
      while (success == false) 
      { 
       try 
       { 
        formEdit.ShowDialog(); 
        if (this.productsTableAdapter1.Connection.State != ConnectionState.Open) 
         this.productsTableAdapter1.Connection.Open(); 
        var changes = nwindDataSet1.Products.GetChanges(); 
        if (changes != null) 
        { 
         OleDbCommandBuilder builder = new OleDbCommandBuilder(productsTableAdapter1.Adapter); 
         productsTableAdapter1.Adapter.UpdateCommand = builder.GetUpdateCommand(); 
         productsTableAdapter1.Adapter.Update(changes); 
         nwindDataSet1.Products.AcceptChanges(); 
        } 
        success = true; 
       } 
       catch (Exception error) 
       { 
        MessageBox.Show(error.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); 
       } 

      } 
     } 

Answer 1

嘗試閱讀文檔
https://msdn.microsoft.com/en-us/library/system.data.oledb.oledbdataadapter.update(v=vs.110).aspx
https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqldataadapter.updatecommand(v=vs.110).aspx
，你有分配的DataAdapter
UpdateCommand財產 製作舒爾還要檢查是否有在changes