Question

我是VB的新手。我想在dataGridView中进行任何更改时更新我的数据库。任何人都可以给我详细介绍吗？方案是我将从datagridview更改值，在我单击更新按钮后我应该更改数据库value.code是

Private Sub btnModify_Click（sender as Object，e As EventArgs）处理btnModify.Click

    Dim cmdbuilder As New Odbc.OdbcCommandBuilder(da)

    ds = gridDisplay(cmbxState.SelectedItem)

    Try
        da.Update(ds.Tables("districtMaster"))

    Catch ex As Exception
        MsgBox(ex.Message)
    End Try
End Sub

Answer 1

您必须在DataAdapter中定义InsertCommand。然后，当您想要保存更改时，您需要调用适配器的Update方法。

在表单加载上填充DataGridView

Private myConString As String
Private con As OleDbConnection = New OleDbConnection
Private Dadapter As OleDbDataAdapter
Private DSet As DataSet

Private Sub Form_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
    myConString = "Your connection string here"
    con.ConnectionString = myConString
    con.Open()
    Dadapter = New OleDbDataAdapter("SELECT * from Table", con)
    DSet = New DataSet
    Dadapter.Fill(DSet, "Table")
    DataGridView1.DataSource = DSet.Tables("Table")
    con.Close()
End Sub

更新数据库

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Using con = new New OleDbConnection(myConString)
    con.Open()
    Dadapter.Update(DSet, "Table")
End Using
End Sub

来自文档：

<强> http://msdn.microsoft.com/en-us/library/system.data.common.dataadapter.update%28v=VS.100%29.aspx

我在更改dataGridView时更新数据库

1 个答案: