试图发现语法错误

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试图在我的代码更新用户信息时，遇到了这个错误...试图发现语法错误

ErrorSystem.Data.OleDb.OleDbException（0x80040E14）：语法错误在 UPDATE语句。在在 System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling（OleDbHResult 小时）在 System.Data.OleDb.OleDbCommand.ExecuteCommandText（对象&（tagDBPARAMS dbParams，对象&的ExecuteReuslt）的ExecuteReuslt）在 System.Data.OleDb.OleDbCommand.ExecuteCommand（的CommandBehavior 行为，在 System.Data.OleDb对象在 System.Data.OleDb.OleDbCommand.ExecuteReaderInternal（的CommandBehavior 行为，字符串方法）&的ExecuteReuslt）。 OleDbCommand.ExecuteNonQuery（） clsDataLayer.UpdateUser（String userName，String favProgram，String City，String leastFav，String State，DateTime Date，Int32 userID1）in c：\ Users \ John Vinson \ Documents \ Visual Studio 2015 \ WebSites \ ProgramAnonymous \ App_Code \ clsDataLayer.cs：线56在 useraccount_details.updateinfo_Click（对象发件人，EventArgs e）如 C：\用户\约翰文森\文件\的Visual Studio 2015 \网站已\ ProgramAnonymous \ useraccount_details.aspx.cs：线57

这里是代码...

public void UpdateUser(string userName, string favProgram, string City, string leastFav, 
     string State, DateTime Date, int userID1) 
    { 
     dbConnection.Open(); 

     string sqlStmt = "UPDATE users SET userName = @username1, " + 
      "favProgram = @favprogram1, " + 
      "city = @city1, " + 
      "state = @state1, " + 
      "leastFavProgram = @leastfavprogram, " + 
      "dateComplete = @datecomplete, " + 
      "WHERE (users.userID = @id)"; 

     OleDbCommand dbCommand = new OleDbCommand(sqlStmt, dbConnection); 

     OleDbParameter param = new OleDbParameter("@username1", userName); 
     dbCommand.Parameters.Add(param); 

     dbCommand.Parameters.Add(new OleDbParameter("@favprogram1", favProgram)); 
     dbCommand.Parameters.Add(new OleDbParameter("@city1", City)); 
     dbCommand.Parameters.Add(new OleDbParameter("@state1", State)); 
     dbCommand.Parameters.Add(new OleDbParameter("@leastfavprogram", leastFav)); 
     dbCommand.Parameters.Add(new OleDbParameter("@datecomplete", Date)); 
     dbCommand.Parameters.Add(new OleDbParameter("@id", userID1)); 

     dbCommand.ExecuteNonQuery(); 

     dbConnection.Close(); 

    }

来源

2017-05-29 John Vinson

您在'WHERE'之前有一个逗号。我投票结束这些只是拼写错误。 –

为了避免这种讨厌的语法错误，不构建（串连）从大块的查询，使用逐字串把查询作为单，可读字符串：

string sqlStmt = 
     @"UPDATE users 
      SET userName = @username1, 
       favProgram = @favprogram1, 
       city = @city1, 
       leastFavProgram = @leastfavprogram, 
       dateComplete = @datecomplete -- <- no comma ',' should be here 
     WHERE (users.userID = @id)";

这里有一个简单的开发过程：打开SQL编辑器，编写正确的查询然后把它（复制+粘贴）到@""

来源

2017-05-29 15:00:28

试图发现语法错误

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