C# ExecuteOnQuery不工作

我已将proc存储如下：

ALTER PROC pr_Update_Users_Nomination
(
      @UserID AS VARCHAR(100),  
      @Nominated AS BIT
)
AS

UPDATE User
SET isNominated = @Nominated
WHERE 
EMPID = @UserID;

我想从c#代码调用此过程：下面是我正在尝试的代码：

void OpenConnection()
{
string Nominated = "False";
    //Connection String
        string sConnString = System.Configuration.ConfigurationManager.ConnectionStrings["ConString1"].ConnectionString;
        SqlConnection mySqlCon = new SqlConnection(sConnString);
        SqlCommand mySqlCom = mySqlCon.CreateCommand();

        //Call the stored proc and provide in parameters
        mySqlCom.CommandText = "EXECUTE pr_Update @UserID @Nominated";
        mySqlCom.Parameters.Add("@UserID", SqlDbType.VarChar, 20).Value = UserID;
        mySqlCom.Parameters.Add("@Nominated", SqlDbType.Bit).Value = Nominated;

        mySqlCon.Open();
        mySqlCom.ExecuteNonQuery();
        mySqlCon.Close();
}

我听到一个错误说

Incorrect Syntax near @Nominated

参数之间缺少逗号（，）

应该是

mySqlCom.CommandText = "EXECUTE pr_Update @UserID, @Nominated";
mySqlCom.Parameters.Add("@UserID", SqlDbType.VarChar, 20).Value = UserID;
mySqlCom.Parameters.Add("@Nominated", SqlDbType.Bit).Value = Nominated;

或者，由于您所做的只是调用一个存储过程，因此可以执行以下操作：

mySqlCom.CommandType = CommandType.StoredProcedure ;
mySqlCom.CommandText = "pr_Update"; //no need to specify parameter names
mySqlCom.Parameters.Add("@UserID", SqlDbType.VarChar, 20).Value = UserID;
mySqlCom.Parameters.Add("@Nominated", SqlDbType.Bit).Value = Nominated;

---

首先，在使用参数执行过程时，用逗号分隔参数

EXECUTE pr_Update @UserID, @Nominated

第二，将您的代码修改为

    string sConnString = System.Configuration.ConfigurationManager.ConnectionStrings["ConString1"].ConnectionString;
    using(SqlConnection mySqlCon = new SqlConnection(sConnString))
    {
        using(SqlCommand mySqlCom = new SqlCommand())
        {
            mySqlCom.Connection = mySqlCon;
            mySqlCom.CommandText = "pr_Update";
            mySqlCom.CommandType = CommandType.StoredProcedure;
            mySqlCom.Parameters.Add("@UserID", SqlDbType.VarChar, 20).Value = UserID;
            mySqlCom.Parameters.Add("@Nominated", SqlDbType.Bit).Value = Nominated;
            try
            {
                mySqlCon.Open();
                mySqlCom.ExecuteNonQuery();
            }
            catch(SqlException ex)
            {
                // do something with the exception
                // don't hide it
            }

        }
    }

---

只给出存储过程的名称，因为您要在后面的语句中添加参数。还要设置CommandType

 mySqlCom.CommandText = "pr_Update";
 mySqlCom.CommandType = CommandType.StoredProcedure;

---

您正在调用错误的SQL。您应该仅将命令的命令文本设置为

pr\u Update

：

mySqlCom.CommandText = "pr_Update";

并将type命令type设置为存储过程：

mySqlCom.CommandType = CommandType.StoredProcedure;

---

有关更多信息，请参阅。

别忘了设置mySqlCom.CommandType=CommandType.StoredProcedureThanks@Fabio GouW，我是这么做的。那么我将如何发送输入参数？您的方式。只有设置

CommandText

是错误的。