Question

我的创建表单需要从存储过程访问，当我运行应用程序时，我收到此错误：

程序或功能＆＃39; spAddEmployee＆＃39;期望参数＆＃39; @ name＆＃39;，未提供

C＃代码：

string connectionstring = ConfigurationManager.ConnectionStrings["AddEmployee"].ConnectionString;

using (SqlConnection con = new SqlConnection(connectionstring))
{
    SqlCommand cmd = new SqlCommand("dbo.spAddEmployee", con);
    cmd.CommandType = CommandType.StoredProcedure;

    con.Open();

    SqlParameter paramname = new SqlParameter();
    paramname.ParameterName = "@Name";
    paramname.Value = employee.Name;
    cmd.Parameters.Add(paramname);

    SqlParameter paramgender = new SqlParameter();
    paramname.ParameterName = "@gender";
    paramname.Value = employee.Gender;
    cmd.Parameters.Add(paramgender);

    SqlParameter paramcity = new SqlParameter();
    paramname.ParameterName = "@city";
    paramname.Value = employee.City;
    cmd.Parameters.Add(paramcity);

    SqlParameter paramdateofbirth = new SqlParameter();
    paramdateofbirth.ParameterName = "@dateofbirth";
    paramname.Value = employee.Dateofbirth;
    cmd.Parameters.Add(paramdateofbirth);

    cmd.ExecuteNonQuery();

    con.Close();
}

my procedure code is given in snapshot

请帮帮我

Answer 1

您使用的是与性别和城市名称相同的SqlParameter对象（paramname）。所以它基本上覆盖了第一个性别和城市的价值。所以我假设您的City值为null，因此它会抛出错误。

这应该有效

using (var con = new SqlConnection(connectionstring))
{
    var cmd = new SqlCommand("dbo.spAddEmployee", con) {
                                CommandType = CommandType.StoredProcedure};
    con.Open();
    var paramname = new SqlParameter
    {
        ParameterName = "@Name",
        Value = employee.Name
    };
    cmd.Parameters.Add(paramname);

    var paramgender = new SqlParameter
    {
        ParameterName = "@gender",
        Value = employee.Gender
    };
    cmd.Parameters.Add(paramgender);

    var paramcity = new SqlParameter
    {
        ParameterName = "@city",
        Value = employee.City
    };
    cmd.Parameters.Add(paramcity);

    var paramdateofbirth = new SqlParameter
    {
        ParameterName = "@dateofbirth",
        Value = employee.Dateofbirth
    };
    cmd.Parameters.Add(paramdateofbirth);
    cmd.ExecuteNonQuery();

}

程序或功能＆＃39; spAddEmployee＆＃39;期望参数＆＃39; @ name＆＃39;，这是未提供的

1 个答案: