需要声明使用CommandBuilder对象，你是 SQL 数据库还是 ACCESS 数据库，这两者的对象不一样的。
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对于：SQL server
Dim Mybuilder As SqlCommandBuilder = New SqlCommandBuilder(da)
da.Update(dt) '使用Update方法实现更新到数据库
对于：ACCESS
Dim Mybuilder As OleDbCommandBuilder = New OleDbCommandBuilder(da)
da.Update(dt) '使用Update方法实现更新到数据库
以下是完整模块
Imports System.Data
Imports System.IO
Imports System.Data.OleDb
Module Module1
Public cn As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\ACCESS数据库.mdb") '定义连接---这里请更改为实际数据库路径及名称
Public DataBaseRST As Integer '用来返回数据库执行结果
Public Function DataModify(ByVal str As String) As Boolean '进行数据库修改操作函数
Dim cmdinsert As New OleDbCommand
Try
cmdinsert.CommandText = str
cmdinsert.Connection = cn
If cn.State = ConnectionState.Closed Then cn.Open()
DataBaseRST = cmdinsert.ExecuteNonQuery() '用来返回执行的结果
cn.Close()
Return True
Catch ex As Exception
MessageBox.Show(Err.Description, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
Return False
End Try
End Function
Public Function Search(ByVal str As String, ByVal DGV As DataGridView) As Boolean '查询 str---查询命令，DGV---DataGridView，用来显示数据的控件
Dim tb As New DataTable
Try
Dim ap As New OleDb.OleDbDataAdapter(str, cn)
ap.Fill(tb)
DGV.DataSource = tb
Return True
Catch ex As Exception
MessageBox.Show(Err.Description, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
Return False
End Try
End Function
End Module
'以下是调用方法
DataModify(" insert into aa values ('1','2')")'-------这里是数据库更新操作
Search("select bb from aa",DataGridView1)'-----------这里是数据表查询操作
c#
string[] strMsg = {"Field1",.....};
string[] strFieldValue = {"FieldValue1",...}
stringBuild sb = new stringBuild("update tablename set ");
int index = 0;
foreach(string var in strMsg)
{
sb .append(var + " = " + strFieldValue [index]+",");
}
sb.remove(sb.lenth-1,1);
