Question

我在VB.NET中有一个Web服务函数，它将参数发送到SQL Server存储过程。

在已部署的计算机中，一切都能完美运行两个月。

但现在错误

过程或函数GetEmployeeDetails需要一个未提供的参数@Progress＆＃39;

在已部署的计算机上仅发生一次。

错误之前和之后一切正常。

网络服务代码：

 Public Function GetLocation(ByVal oldNumber As Integer, ByVal NewNumber As Integer, ByVal Location As String,ByVal Progress As String, ByVal Name As String, ByVal ID As String) As String
 Try
    Command1 = New SqlCommand("GetEmployeeDetails", connection1)

    With Command1
        .CommandType = CommandType.StoredProcedure
        .Parameters.Add("@oldNumber", SqlDbType.Int).Value = oldNumber
        .Parameters.Add("@NewNumber", SqlDbType.Int).Value = NewNumber
        .Parameters.Add("@Location", SqlDbType.VarChar, 10).Value = Location
        .Parameters.Add("@Progress", SqlDbType.Char, 10).Value = IIf(Progress = "", System.DBNull.Value, Progress)
        .Parameters.Add("@Name", SqlDbType.VarChar, 50).Value = Name
        .Parameters.Add("@ID", SqlDbType.VarChar, 50).Value = ID

        .Connection.Open()
        .ExecuteNonQuery()
        .Connection.Close()
    End With

存储过程参数：

ALTER PROCEDURE GetEmployeeDetails 
(
    @oldNumber AS INTEGER,
    @NewNumber AS INTEGER, 
    @Location AS VARCHAR(10),
    @Progress AS CHAR(1),
    @Name AS VARCHAR(50),
    @ID AS VARCHAR(50)
) 
As

我只是想知道为什么在正确传递所有参数时发生错误？

Answer 1

由于您在sql中将参数声明为CHAR（1），但在Vb.net中像Char（10）一样使用。

试试这个

ALTER PROCEDURE GetEmployeeDetails 
(
    @oldNumber AS INTEGER,
    @NewNumber AS INTEGER, 
    @Location AS VARCHAR(10),
    @Progress AS CHAR(10),
    @Name AS VARCHAR(50),
    @ID AS VARCHAR(50)
) 
As

程序或功能＆＃34;程序名称＆＃34;期望参数＆＃34; Param名称＆＃34;没有供应的很少发生

1 个答案: