关于更新ACESS的数据
我用ASP.NET   C#   连接   ACESS   数据库

string   strConnection   =   "Provider=Microsoft.Jet.OleDb.4.0; ";
strConnection   +=   @ "Data   Source=~\db.mdb ";
OleDbConnection   objConnection   =   new   OleDbConnection(strConnection);

用插入语句

string   strInsert   =   "INSERT   INTO   sheet1   (关系人,金额)   VALUES   ( ' "   +   DropDownList1.Text.ToString()   +   " ', ' "   +   TextBox6.Text   +   " ') ";
OleDbCommand   objCommand   =   new   OleDbCommand(strInsert,   objConnection);
objConnection.Open();
objCommand.ExecuteNonQuery();
objConnection.Close();

运行都正常

我想使用删除和更新语句，DELETE   和   UPDATA
但是运行总是报错
请问   应该怎么写他们的代码

------解决方案--------------------
"UPDATE sheet1 SET [金额]= ' "+Textbox2.text+ " ' WHERE [关系人]= ' "+DropDownList1.Text + " ' "