Question

我有一个在SQL中运行的存储过程：

ALTER PROCEDURE [dbo].[sp_fetch_journal_search]
    -- Add the parameters for the stored procedure here
    @sJournalText nvarchar(250) OUT,
    @dJournalDate date OUT,
    @sJournalTime nvarchar(250) OUT,
    @sJournalImageName nvarchar(250) OUT,
    @sJournalWebsite nvarchar (250) OUT,
    @iJournalID int OUT,
    @iJournalEntryID int OUT,
    @sSearch nvarchar(250)
AS
BEGIN           
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    select  @dJournalDate = journal_date, 
            @sJournalTime = journal_time, 
            @sJournalImageName = journal_text, 
            @sJournalImageName= image_name, 
            @sJournalWebsite = website,
            @sJournalText = journal_text,
            @iJournalEntryID = journal_entry_id,
            @iJournalID = journal_id 
    from journalview
    where journal_date like '%' + @sSearch + '%'
    or journal_time like '%' + @sSearch + '%'
    or journal_text like '%' + @sSearch + '%'
    or image_name like '%' + @sSearch + '%'
    or website like '%' + @sSearch + '%'
    group by journal_date, journal_time, journal_text, image_name, website, journal_id,journal_entry_id

当我从c＃调用它时，我在ExecuteReader命令上遇到错误，该命令表明int与date不兼容。我看不出有什么问题：

SqlCommand cmdFetchJournal = new SqlCommand();
cmdFetchJournal.Connection = ConnectData.connection;
cmdFetchJournal.CommandText = "sp_fetch_journal_search";
cmdFetchJournal.CommandType = CommandType.StoredProcedure;
cmdFetchJournal.Parameters.AddWithValue("sSearch", (sSearch != null ? sSearch : ""));
cmdFetchJournal.Parameters["sSearch"].Direction = ParameterDirection.Input;
cmdFetchJournal.Parameters.AddWithValue("sJournalText", SqlDbType.VarChar);
cmdFetchJournal.Parameters["sJournalText"].Direction = ParameterDirection.Output;
cmdFetchJournal.Parameters.AddWithValue("dJournalDate", SqlDbType.Date);
cmdFetchJournal.Parameters["dJournalDate"].Direction = ParameterDirection.Output;
cmdFetchJournal.Parameters.AddWithValue("sJournalTime", SqlDbType.VarChar);
cmdFetchJournal.Parameters["sJournalTime"].Direction = ParameterDirection.Output;
cmdFetchJournal.Parameters.AddWithValue("sJournalWebsite", SqlDbType.VarChar);
cmdFetchJournal.Parameters["sJournalWebsite"].Direction = ParameterDirection.Output;
cmdFetchJournal.Parameters.AddWithValue("sJournalImageName", SqlDbType.VarChar);
cmdFetchJournal.Parameters["sJournalImageName"].Direction = ParameterDirection.Output;
cmdFetchJournal.Parameters.AddWithValue("iJournalID", SqlDbType.Int);
cmdFetchJournal.Parameters["iJournalID"].Direction = ParameterDirection.Output
cmdFetchJournal.Parameters.AddWithValue("iJournalEntryID", SqlDbType.Int);
cmdFetchJournal.Parameters["iJournalEntryID"].Direction = ParameterDirection.Output;
SqlDataReader drFetchJournal = cmdFetchJournal.ExecuteReader();

非常感谢。

Answer 1

我刚才注意到这些是output，因此您需要使用Add方法而不是AddWithValue。我将把这个答案的其余部分作为参考。

您遇到此问题的原因是您没有提供Parameters.AddWithValue()电话的价值。所以当你打电话时

Parameters.AddWithValue("dJournalDate", SqlDbType.VarChar);

您将值设置为SqlDbType.VarChar，可能是1。如果您将其更改为

Parameters.AddWithValue("dJournalDate", yourDate);

你应该没事。这适用于所有其他Parameters.AddWithValue()来电。

Answer 2

你的问题就在这一行：

cmdFetchJournal.Parameters.AddWithValue("dJournalDate", SqlDbType.VarChar);

dJournalDate是一个日期，但您正在尝试传入一个VarChar。将其更改为：

cmdFetchJournal.Parameters.AddWithValue("dJournalDate", SqlDbType.Date);

从c＃调用我的存储过程时出错

2 个答案: