c#中向存储过程传递参数

本文关键字：参数 存储过程 | 更新日期: 2023-09-27 18:05:22

我有一个存储过程，它返回变量@result设置为1或0(数据类型位)。我正在访问它在我的c#与以下代码。它抛出一个错误，说太多的参数。

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:(我认为这很好…)请纠正我的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

c#中向存储过程传递参数

你可以试试下面的代码:

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); 
}

为什么要设置:

Cmd.CommandText = "Registration";

将替换您的存储过程名称，因此它不会调用您在:

中指定的存储过程。
SqlCommand Cmd = new SqlCommand("usp_CheckEmailMobile", con);

使用SQL分析器来调试"over the wire"的SQL是否如预期的那样是有用的

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