ASP.NET

User Control with Custom Tags

11-Jan-07 19:04

manish srivastava wrote:
it means write code to read file,upload and browse button & write code to save and selected file to browser....

It seems you want CP to do all what you need, then what else would you do? Just copy/paste like Mark said in the other post? Oh boy, you are loosing your fun of writing code and being a programmer shouldn't appear in your mind.

LagoonMatt11-Jan-07 9:01

Re: Web User Control with Custom Tags

11-Jan-07 9:01

Sorry, this is a double post, I forgot to make it ignore HTML tags.

This is probably a more involved question, but if you can atleast give me the bullet points. I want be able to have a web user control that gets used something like this

<cc:MyControl id="MyControl1" runat="server">
<Fields>
<Field dbname="name" header="Full Name">
<Field dbname="Address1" header="Address 1">
...
</Fields>
<EmailRecipients>
<Recipient address="someone@somewhere.com">
<Recipient address="someelse@somewhere.com">
...
</EmailRecipients>
</cc:MyControl>

I then want to be able in the code behind have access the Fields and the EmailRecipients. I also want Intelisense to work. You see this behavior with controls like the GridView control.

Thanks,
Matt

LagoonMatt11-Jan-07 9:02

11-Jan-07 9:02

This is probably a more involved question, but if you can at least give me the bullet points. I want be able to have a web user control that gets used something like this

<cc:MyControl id="MyControl1" runat="server">
<Fields>
<Field dbname="name" header="Full Name">
<Field dbname="Address1" header="Address 1">
...
</Fields>
<EmailRecipients>
<Recipient address="someone@somewhere.com">
<Recipient address="someelse@somewhere.com">
...
</EmailRecipients>
</cc:MyControl>

I then want to be able in the code behind have access the Fields and the EmailRecipients. I also want Intelisense to work. You see this behavior with controls like the GridView control.

Thanks,
Matt

minhpc_bk11-Jan-07 23:49

11-Jan-07 23:49

In the web user control, you can simply define the collection properties for Fields and EmailRecipients like:

private List<Field> _fields = new List<Field>();
                   
[PersistenceMode(PersistenceMode.InnerProperty)]
public List<Field> Fields
{
	get
	{
		return _fields;
	}
}

The source code of Field class should be defined in the App_Code or a seperate project.

LagoonMatt12-Jan-07 13:58

12-Jan-07 13:58

I set up a simple test project for this. Adding the public List property to the control does make intelisense recognize MyFields, but it doesn't think anything should be inside the MyFields tags (Validation (ASP.Net): Text is not allowed between the opening and closing tags for element MyFields'.

What else do I need to do?

Web User Control Class

public partial class MyControl : System.Web.UI.UserControl
{
    private List<MyField> _MyFields = new List<MyField>();

    [PersistenceMode(PersistenceMode.InnerProperty)]
    public List<MyField> MyFields
    {
        get
        {
            return _MyFields;
        }
        set
        {
            _MyFields = value;
        }
    }

    protected void Page_Load(object sender, EventArgs e)
    {

    }
}

MyField class, located in the App_Code folder

public class MyField
{
    string _MyProperty;
    public string MyProperty
    {
        get
        {
            return _MyProperty;
        }
        set
        {
            _MyProperty = value;
        }
    }
	public MyField()
	{
		
	}
}

minhpc_bk12-Jan-07 20:58

12-Jan-07 20:58

In addition to the fact that you have to register the tagname and tagprefix for the web user control, you also register the namespace and tagprefix for the MyField so that the ASP.NET parser can recognize the tag. The registration markup should be something like:

<%@ Register Src="MyControl.ascx" TagName="MyControl" TagPrefix="uc1" %>
<%@ Register TagPrefix="uc1" Namespace="ASP" %>

Assuming the MyField class is not wrapped up in any namespace in the App_Code, and the default namespace ASP is used. If you define it in your namespace, you simply replace the ASP with your own one.

LagoonMatt14-Jan-07 8:11

14-Jan-07 8:11

That got me a step closer. uc1:MyField now shows up in intelisense. However the build fails saying that Unknown server tag 'uc1:MyField'. I am not using any custom namespaces

This is my markup

<uc1:MyControll ID="MyControll1" runat="server">
<MyFields>
<uc1:MyField MyProperty="This" />
<uc1:MyField MyProperty="That" />
<uc1:MyField MyProperty="You" />
</MyFields>
</uc1:MyControll>

This is my register tags

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<%@ Register Src="MyControll.ascx" TagName="MyControll" TagPrefix="uc1" %>
<%@ Register TagPrefix="uc1" Namespace="ASP"%>

Thoughts?

minhpc_bk14-Jan-07 14:02

14-Jan-07 14:02

You now simply define the MyField in a namespace and replace the ASP with that value. My mistake here is that the default namespace of the MyField class will be empty, not ASP like the dynamic of the web pages, and the Namespace attribute of the Regsiter directive does not allow an empty value, sorry about this. Also, I'm not sure if you know this fact or not, but when you switch to the Design view you will see the the designer reports the error on the web user control. The only way to work around this error is to use a custom web control.

LagoonMatt15-Jan-07 9:43

15-Jan-07 9:43

The designer error is kind of annoying. Does anyone know to work around that? I made this a server control and have it working like i want. The class is inheriting from CompositeControl, I even added a Designer class and handled the GetDesignErrorHTML override, or whatever its called, and I still get the error. Its not serious as it still compiles and functions as expected, but it looks rather unprofessional.

minhpc_bk15-Jan-07 11:38

plzz write a simple function on..........

15-Jan-07 11:38

Yeah, it's quite annoying as far as the design support is concerned, and afaik this is the limitation of the product in supporting the web user control at design time. The parser always looks at the UserControl class when a web user control is placed in the web page while it should look at the real control or at least the base class of the web user control.

manish srivastava11-Jan-07 6:13

manish srivastava

11-Jan-07 6:13

plzz write a simple function how to make a e-mail function in asp.net.
the function should accept, to, from,subject & message string and send e-mail using ASP.NET.

ed^nrgc11-Jan-07 7:03

ed^nrgc

11-Jan-07 7:03

Ok, I finished it. Now what?

Colin Angus Mackay11-Jan-07 12:20

Colin Angus Mackay

11-Jan-07 12:20

ednrgc wrote:
Ok, I finished it. Now what?

Upcoming Scottish Developers events:
* Glasgow: Tell us what you want to see in 2007

My: Website | Blog | Photos

rockford.boulderdash11-Jan-07 8:40

rockford.boulderdash

11-Jan-07 8:40

There you go, enjoy Smile | :)

=============================================

using System.Net.Mail;

public static void SendMailMessage(string sMailBody, string sFromAddress, string sFromName,
string[] sToAddress, string[] sCC, string[] sBCC, string sSubject, bool IsHTML)
{
SmtpClient objSMTPClient = new SmtpClient("localhost");
MailMessage objMessage = new MailMessage();

try
{
MailAddress objFromAddress = new MailAddress(sFromAddress, sFromName);

// From address will be given as a MailAddress Object
objMessage.From = objFromAddress;

// To address collection of MailAddress
for (int i = 1; i <= sToAddress.Length; i++)
{
objMessage.To.Add(sToAddress[i - 1]);
}

// CC and BCC optional
// MailAddressCollection class is used to send the email to various users
// You can specify Address as new MailAddress("user@host.com")
if (sCC != null)
{
if (sCC.Length > 0)
{
for (int i = 1; i <= sCC.Length; i++)
{
objMessage.CC.Add(sCC[i - 1]);
}
}
}
if (sBCC != null)
{
if (sBCC.Length > 0)
{
for (int i = 1; i <= sBCC.Length; i++)
{
objMessage.Bcc.Add(sBCC[i - 1]);
}
}
}

// Body can be html or text format
if (IsHTML)
objMessage.IsBodyHtml = true;

objMessage.Subject = sSubject;
objMessage.Body = sMailBody;

// Send SMTP mail
objSMTPClient.Send(objMessage);
}
catch
{
}
}

My blog: http://www.asaf.co.il