如何在C#中从另一个类调用函数
本文关键字:另一个 调用 函数 | 更新日期: 2023-09-27 17:58:24
我想为我的所有按钮单击方法创建一个泛型类。我的按钮点击方法在同一个aspx.cs文件中正常工作,但当我想从泛型类调用这个方法时。但参数并没有通过。有人能帮帮我吗?这是我的密码。
这是基类
namespace WebApplication1
{
public partial class Singnup : System.Web.UI.Page
{
protected void SUpButton_Click(object sender, EventArgs e)
{
Webapplication2.program.Insert_RData(sender, e);
}
}
}
这是第二类,我想从这里调用按钮方法
namespace Webapplication2
{
public class program : WebApplication1.Singnup
{
public static void Insert_RData(object sender, EventArgs e)
{
SqlConnection con_Signup = new SqlConnection(ConfigurationManager.ConnectionStrings["myconnectionstring"].ConnectionString);
con_Signup.Open();
SqlCommand cmd_check = new SqlCommand("Check_Existing_Email", con_Signup);
cmd_check.CommandType = CommandType.StoredProcedure;
cmd_check.Parameters.AddWithValue("@mail",EmailId);
object i = cmd_check.ExecuteScalar();
if (i != null)
{
lbforerror.Text = "This Email is already Registered";
lbforerror.Visible = true;
}
您正在将信息从实例化类Singup
传递到静态类program
。标签等将无法从静态类中使用,因为它与实际标签没有连接。
如果你想分离按钮点击操作,并且你想让它们访问表单元素(如lbforerror
,那么我建议你使用分部类或,只需使用同一类中的Region来清理逻辑
#region Button Logic
//Your logic here
#endregion //button logic
最好的方法是将可重用逻辑分离到一个完全不同的类中(在这种情况下,处理插入),该类返回结果,并在原始类中决定:
public class ConnectionManager
{
public object InsertRData(string EmailId)
{
SqlConnection con_Signup = new SqlConnection(ConfigurationManager.ConnectionStrings["myconnectionstring"].ConnectionString);
con_Signup.Open();
SqlCommand cmd_check = new SqlCommand("Check_Existing_Email", con_Signup);
cmd_check.CommandType = CommandType.StoredProcedure;
cmd_check.Parameters.AddWithValue("@mail", EmailId);
object i = cmd_check.ExecuteScalar();
return i;
}
}
然后你原来的班级可以简单地说
public partial class Singnup : System.Web.UI.Page
{
protected void SUpButton_Click(object sender, EventArgs e)
{
ConnectionManager mgr = new ConnectionManager();
object i = mgr.Insert_RData("email logic here");
if (i != null)
{
lbforerror.Text = "This Email is already Registered";
lbforerror.Visible = true;
}
}
}
尝试以下代码
namespace WebApplication1
{
public partial class Singnup : System.Web.UI.Page
{
protected void SUpButton_Click(object sender, EventArgs e)
{
string EmailId = "yourmailid@domain.com";
Webapplication2.program.InsertRData(EmailId);
}
}
}
namespace Webapplication2
{
public class program : WebApplication1.Singnup
{
public static void Insert_RData(object sender, EventArgs e)
{
string EmailId = "yourmailid@domain.com";
InsertRData(EmailId);
}
public static void InsertRData(string EmailId)
{
SqlConnection con_Signup = new SqlConnection(ConfigurationManager.ConnectionStrings["myconnectionstring"].ConnectionString);
con_Signup.Open();
SqlCommand cmd_check = new SqlCommand("Check_Existing_Email", con_Signup);
cmd_check.CommandType = CommandType.StoredProcedure;
cmd_check.Parameters.AddWithValue("@mail", EmailId);
object i = cmd_check.ExecuteScalar();
if (i != null)
{
lbforerror.Text = "This Email is already Registered";
lbforerror.Visible = true;
}
}
}
}