过程或函数有太多参数指定winform c#

Question

SqlCommand cmmd = new SqlCommand("INSERT into Vows(MemberID, VowAmount, VowDate, Description) Values (@MemberID, @vowAmount, @vowDate, @vowDesc)", con);

SqlCommand storedprocedure = new SqlCommand("UPDATEINCOME", con);
storedprocedure.CommandType = CommandType.StoredProcedure;
storedprocedure.Parameters.Add(new SqlParameter("@IncomeDate", SqlDbType.Date)).Value = vowdateTime.Text;

SqlCommand insertStoredProcedure = new SqlCommand("InsertIncomeDate", con);
insertStoredProcedure.CommandType = CommandType.StoredProcedure;

insertStoredProcedure.Parameters.Add(new SqlParameter("@IncomeDate", SqlDbType.Date)).Value = vowdateTime.Text;
insertStoredProcedure.Parameters.Add("@IncomeDate", SqlDbType.Date).Direction = ParameterDirection.Input;
insertStoredProcedure.Parameters.Add("@IncomeDate", SqlDbType.Date).Direction = ParameterDirection.Input;

这是我的代码，我收到以下错误：

过程或函数指定的参数过多

cmmd.Parameters.AddWithValue("@MemberID", vowMemID.Text);
cmmd.Parameters.AddWithValue("@vowAmount", vowAmount.Text);
cmmd.Parameters.AddWithValue("@vowDate", vowdateTime.Text);
cmmd.Parameters.AddWithValue("@vowDesc", vowDescBox.Text);
cmmd.ExecuteNonQuery();                   

insertStoredProcedure.ExecuteNonQuery();  // error occurs here
insertStoredProcedure.Parameters.Clear();

storedprocedure.ExecuteNonQuery();    // and here
storedprocedure.Parameters.Clear();

这些是存储过程：

ALTER PROCEDURE [dbo].[UPDATEINCOME] 
    (@IncomeDate date, @VowAmount money) 
AS
    Declare @TitheAmount money
    Declare @OfferingAmount money
    Declare @IncomeTotal money

    IF NOT EXISTS (Select VowDate from Vows where VowDate = @IncomeDate)
    BEGIN
        set @VowAmount = '0'
    END
    ELSE 
    BEGIN
        set @VowAmount = (Select VowAmount from Vows where VowDate = @IncomeDate)
    END

    IF NOT EXISTS (Select OfferingDate from Offering where OfferingDate = @IncomeDate)
    BEGIN
        set @OfferingAmount = '0'
    END
    ELSE 
    BEGIN
       set @OfferingAmount = (Select OfferingAmount from Offering where OfferingDate = @IncomeDate)
    END

    IF NOT EXISTS (Select TitheDate from Tithe where TitheDate = @IncomeDate)
    BEGIN
        set @TitheAmount = '0'
    END
    ELSE
    BEGIN
       Set @TitheAmount = (Select TitheAmount from Tithe where TitheDate = @IncomeDate)
    END

    Set @IncomeTotal = @TitheAmount + @VowAmount + @OfferingAmount

    UPDATE IncomeReport 
    SET Amount = @IncomeTotal 
    WHERE IncDATE = @IncomeDate

UPDATEINCOME 存储过程更新IncomeReport 表。它将此处指定为IncomeDate 的特定日期的所有金额相加，并将总数插入IncomeReports。

同时INsertDate 存储过程检查IncomeReport 表是否有'cmmd' 命令打算在其下插入金额的日期。如果没有，它还会插入从IncomeDate 获得的日期。然后，这允许UPDATEINCOME 在日期为@IncomeDate 的表中插入一个金额。

Answer 1

您正在添加两个 @IncomeDate 参数。不要那样做;p

storeproc.Parameters.Add(new SqlParameter("@IncomeDate", SqlDbType.Date)).Value = vowdateTime.Text;
...
storeproc.Parameters.Add("@IncomeDate", SqlDbType.Date).Direction = ParameterDirection.Input;

并且（正如 Sriram 在 cmets 中指出的那样）：

storedprocedure.Parameters.Add(new SqlParameter("@IncomeDate", SqlDbType.Date)).Value = vowdateTime.Text;
...
storedprocedure.Parameters.Add("@IncomeDate", SqlDbType.Date).Direction = ParameterDirection.Input;

如果你愿意，你可以捕获Parameters.Add的结果：

var p = storeproc.Parameters.Add(new SqlParameter("@IncomeDate", SqlDbType.Date));
p.Value = vowdateTime.Text;
p.Direction = ParameterDirection.Input;

但是Input 是默认的无论如何。

不过，坦率地说，你让这件事变得困难重重。我在这里强烈推荐一个像“dapper”这样的工具：

DateTime when = ...
decimal amount = ...
connection.Execute("UPDATEINCOME",
    new { IncomeDate = when, VowAmount = amount },
    commandType: CommandType.StoredProcedure);

工作完成。