Question

我有一个存储过程，它返回一个变量@result设置为1或0（数据类型位）。我使用以下代码在我的C＃中访问它。它抛出错误说太多参数。

 protected void btnRegister_Click(object sender, EventArgs e)
    {

        SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["ConnectionString"]);
        con.Open();



        SqlCommand Cmd = new SqlCommand("usp_CheckEmailMobile", con);
        Cmd.CommandType = CommandType.StoredProcedure;
        Cmd.CommandText = "Registration";
        Cmd.Parameters.AddWithValue("@Name", txtName.Text);
        Cmd.Parameters.AddWithValue("@Email", txtEmailAddress.Text);
        Cmd.Parameters.AddWithValue("@Password", txtPassword.Text);
        Cmd.Parameters.AddWithValue("@CountryCode", ddlCountryCode.Text);
        Cmd.Parameters.AddWithValue("@Mobile", txtMobileNumber.Text);
        //Cmd.Parameters.Add("@Result", DbType.Boolean);
        SqlParameter sqlParam = new SqlParameter("@Result", DbType.Boolean);
        //sqlParam.ParameterName = "@Result";
        //sqlParam.DbType = DbType.Boolean;
        sqlParam.Direction = ParameterDirection.Output;
        Cmd.Parameters.Add(sqlParam);
        Cmd.ExecuteNonQuery();
        con.Close();
        Response.Write(Cmd.Parameters["@Result"].Value); 



    }

存储过程:(我觉得很好......）请更正我的CS代码......

ALTER PROCEDURE [dbo].[usp_CheckEmailMobile]
  ( @Name VARCHAR(50), 
@Email NVARCHAR(50), 
@Password NVARCHAR(50), 
@CountryCode INT, 
@Mobile VARCHAR(50), 
@Result BIT OUTPUT)
 AS 
BEGIN 

IF EXISTS (SELECT COUNT (*) FROM AUser WHERE  [Email] = @Email AND [Mobile] = @Mobile) 
 Begin 
 Set @Result=0; --Email &/or Mobile does not exist in database
End
ELSE
Begin
  --Insert the record & register the user 
INSERT INTO [AUser] ([Name], [Email], [Password], [CountryCode], [Mobile]) VALUES (@Name, @Email, @Password, @CountryCode, @Mobile)  
Set @Result=1;
 End

END

Answer 1

你可以试试这段代码：

bool result=false;
SqlCommand scCommand = new SqlCommand("usp_CheckEmailMobile", sqlCon);
scCommand.CommandType = CommandType.StoredProcedure;
scCommand.Parameters.Add("@Name", SqlDbType.VarChar, 50).Value = txtName.Text;
scCommand.Parameters.Add("@Email", SqlDbType.NVarChar, 50).Value = txtEmailAddress.Text;
scCommand.Parameters.Add("@Password ", SqlDbType.NVarChar, 50).Value = txtPassword.Text;
scCommand.Parameters.Add("@CountryCode", SqlDbType.VarChar.50).Value =ddlCountryCode.SelectedText;
scCommand.Parameters.Add("@Mobile", SqlDbType.NVarChar, 50).Value = txtMobileNumber.Text;
scCommand.Parameters.Add("@Result ", SqlDbType.Bit).Direction = ParameterDirection.Output;
try
{
    if (scCommand.Connection.State == ConnectionState.Closed)
    {
        scCommand.Connection.Open();
    }
    scCommand.ExecuteNonQuery();
    result = Convert.ToBoolean(scCommand.Parameters["@Result"].Value);


}
catch (Exception)
{

}
finally
{                
    scCommand.Connection.Close();
    Response.Write(result); 
}

Answer 2

你为什么设置：

Cmd.CommandText = "Registration";

这将替换您的存储过程名称，因此它不会调用您在以下位置中指示的存储过程：

SqlCommand Cmd = new SqlCommand("usp_CheckEmailMobile", con);

使用SQL事件探查器来调试“通过网络连接”的SQL是否符合预期会很有用。

将参数传递给C＃中的存储过程

2 个答案: