我的ASP.NET项目中有以下代码,我仍然无法弄清楚为什么我的SQL Server表保存参数名称而不是值。任何帮助将不胜感激。
[WebMethod]
public static void InsertMethod(string firstname, string lastname)
{
SqlConnection con = new SqlConnection(@"Data Source=KIMBERLY\SQLSERVER02;Initial Catalog=Chalegh;User ID=***;Password=***");
SqlCommand cmd = new SqlCommand("insert into TestTable values('@Firstname','@Lastname')", con);
SqlParameter paramFirstName = new SqlParameter();
paramFirstName.ParameterName = "@Firstname";
paramFirstName.Value = firstname;
cmd.Parameters.Add(paramFirstName);
SqlParameter paramLastName = new SqlParameter();
paramLastName.ParameterName = "@Lastname";
paramLastName.Value = lastname;
cmd.Parameters.Add(paramLastName);
con.Open();
cmd.ExecuteNonQuery();
答案 0 :(得分:12)
删除引号并使用AddWithValue
方法,如下所示:
SqlCommand cmd = new SqlCommand("insert into TestTable values(@Firstname,@Lastname)", con);
cmd.Parameters.AddWithValue("@Firstname",firstname);
cmd.Parameters.AddWithValue("@Lastname",lastname);
您的实际问题是引号。使用引号时@Firstname
和@Lastname
被视为实际值而不是参数。您不必使用{ {1}}方法但它更短且易于使用。您不需要为每个参数创建AddWithValue
并逐个设置每个属性。