Dim Sql As String
Dim Cmd As OleDb.OleDbCommand
Dim Adapter As OleDb.OleDbDataAdapter
Dim DS As Data.DataSet
Dim DBStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;DataSource=|DataDirectory|\txl.mdb"
Dim conn As OleDb.OleDbConnection
conn = New OleDb.OleDbConnection(DBStr)
conn.Open()
Sql = "select * from [表1] where ID > 0"
Cmd = New OleDb.OleDbCommand(Sql, conn)
Adapter = New OleDb.OleDbDataAdapter(Cmd)
DS = New System.Data.DataSet()
Adapter.Fill(DS)
Textbox1.Text = DS.Tables("表1").Rows(0).Item(1)
运行后最后一句报"未将对象引用设置到对象的实例。"
Dim Cmd As OleDb.OleDbCommand
Dim Adapter As OleDb.OleDbDataAdapter
Dim DS As Data.DataSet
Dim DBStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;DataSource=|DataDirectory|\txl.mdb"
Dim conn As OleDb.OleDbConnection
conn = New OleDb.OleDbConnection(DBStr)
conn.Open()
Sql = "select * from [表1] where ID > 0"
Cmd = New OleDb.OleDbCommand(Sql, conn)
Adapter = New OleDb.OleDbDataAdapter(Cmd)
DS = New System.Data.DataSet()
Adapter.Fill(DS)
Textbox1.Text = DS.Tables("表1").Rows(0).Item(1)
运行后最后一句报"未将对象引用设置到对象的实例。"
解决方案 »
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