将数据保存在数据库中时出错

Question

我正在使用此代码保存值以访问数据库

我做了什么。

• 将数据库添加到项目中
• 将数据绑定绑定到文本框
• 在表单加载时，我将值从数据库获取到文本框（所以我做得正确）
• 在按钮一上，我使用此代码添加新字段

代码：

 Private Sub Button2_Click(sender As Object, e As EventArgs) Handles    Button2.Click
               TabelaBindingSource.AddNew()
           End Sub

并在按钮保存时添加此代码

Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
    Try
        Validate()
        TabelaBindingSource.EndEdit()
         TabelaTableAdapter.Update(EUUsersDataSet.tabela)
        MessageBox.Show("Saved")
    Catch ex As Exception
        MessageBox.Show("Error during saving")
    End Try
End Sub

它弹出我框“已保存”但数据库中没有记录我做错了什么？

我尝试通过 TabelaBindingNavigator 添加它，即使我点击该按钮上的保存仍然无法保存它。

Answer 1

此代码适用于我：

Private Sub Form2_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    Me.TabelaTableAdapter.Fill(Me.Database1DataSet.Table1)
End Sub

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Me.TabelaBindingSource.AddNew()
End Sub

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
    Try
        Me.Validate()
        Me.TabelaBindingSource.EndEdit()
        Me.TabelaAdapterManager.UpdateAll(Me.Database1DataSet)
    Catch ex As Exception
        MessageBox.Show("Error during saving")
    End Try
End Sub