How to Submit a Html Form and Get Response Dynamically? - ASP.NET Discussion Boards

how to handle multiple dynamic controls after postback?

Krishnamenon14-Jun-07 5:10

14-Jun-07 5:10

Here is my requirement :

users has to able to create their custom forms through web interface. it should more or less equal to visual studio 2005 deisgner. I come across many articles and done some work around to create a drag and drop scenario in web application for controls but i finally ended with nothing.

Again i changed layout for that maodule :Form Designer:
i came up with linear design which is having a property window on right side holding few common properties for most controls like Control name, control type, height, width etc.

I have another layout having multiple rows & 2 columns(like Left & Right), in each cell i assigned a link button.

Here how i planned to work it out:
When user click on any cell, right side properties will be visible to user and user can select the controls of his/her choice setting some properties to it. Upon clicking save button (which will be located in the property window) program will generate a control at the link button place.

Problems am facing :
I could not able to regenerate the controls after postback done. I could able to save & load control properties from array but could not able to establish the same controls after postback done.

can anyone give me references or suggesstions Cry | :((

how to handle multiple dynamic controls after
postback?

from:
krishna

Re: how to handle multiple dynamic controls after postback?

Jesse Squire14-Jun-07 6:11

Jesse Squire

14-Jun-07 6:11

Some general advice for working with dynamic controls

Always assign dynamic controls and all of their naming containers explicit ids.
Always recreate your dynamic controls in either the page's OnInit method or Init event handler.
Ensure that you assign the same id to your controls and all of their naming containers on initial creation and at each postback. Assign the ids at the time you recreate your controls.[OnInit method or in Init event handler]
Ensure that you place the controls in the same naming containers on the page on initial creation and at each postback. Site the controls at the time you create them.[OnInit method or in Init event handler]

The ASP.NET page model is going to use a combination of UniqueId, ClientId, and positional association within the control tree in order to restore your control's ViewState, match up post data, and raise postback events. In order to make sure that your controls are created properly for that processing to happen, your best bet is always to preform the actions in the page's OnInit method or Init event handler, as I've beaten to death above. Smile | :)

I'd suggest that you take a peek at the Lifecycle of a Page[^]. Even though that article was written for .NET 1.0, it is still accurate for versions 2.0 and 3.0. It may also prove helpful for you to download a copy of Lutz Roeder's Reflector[^] and look over the implementation of the Page class.

Hope that helps. Smile | :)

--Jesse

"... the internet's just a big porn library with some useful articles stuck in." - Rob Rodi

Re: how to handle multiple dynamic controls after postback?

Krishnamenon18-Jun-07 3:27

Krishnamenon

18-Jun-07 3:27

Hi jesse,

Thanks for your valuable suggestion.
I am doing the same steps and also following robbieMorris sample at >
http://www.eggheadcafe.com/articles/extendtextboxviewstate.asp , here he clearly demonstrated creating controls runtime as well as handling them at postback & in viewstate.

In my scenario i took two rows and two columns.
> I have linkbuttons in each cell
> upon clikcing on linkbutton a window will be enabled at right side (assume it as property window)
> From that window user will select controls from a dropdown list (like text box, label etc), enter name, height, width for that controls (as we do in property window).
> upon hitting on save button in that property window, my program will create a runtime control.

> next he'll click linkbutton in another cell and follow same procedure for creating controls.
> but at this point am facing problem though am following Robbie Morris concepts i dont know control is not creating as well as i am loosing last control which i created.

appreciate ypur help on this !!!

From,
Krishna

Re: how to handle multiple dynamic controls after postback?

Jesse Squire18-Jun-07 6:43

Jesse Squire

18-Jun-07 6:43

If you are following the advice that I posted and the approach that Robbe uses in his tutorial, then I don't see anything in your description that would indicate a design issue. At this point, without looking at some of the code, I don't think that we will be able to help you further.

I'd suggest that we start by looking at the relevant snipits where you recreate the controls on postback / Save button click.

--Jesse

"... the internet's just a big porn library with some useful articles stuck in." - Rob Rodi

webpage to Image

Kushi Bobby14-Jun-07 5:06

Kushi Bobby

14-Jun-07 5:06

Hi all,

In my application i wanna display an image of having the current webpage content.

I mean,in my application there is Preview button,in that click event i have to display all the webpage content as Image.

By googling am able to know i have to use mshtml and shdocvw dlls.but

Any one of you pls gime some source

Have a Nice Day Dudes

Re: webpage to Image

theimmortalmoo14-Jun-07 10:17

theimmortalmoo

14-Jun-07 10:17

Press Print scrn and copy and paste into ms painT?

Re: webpage to Image

Kushi Bobby15-Jun-07 0:24

Kushi Bobby

15-Jun-07 0:24

HI THanks for the Reply.

But here i need to develop programatically to print the image.

Any suggestions please

Have a Nice Day Dudes

How to Submit a Html Form and Get Response Dynamically?

pubududilena14-Jun-07 4:11

pubududilena

14-Jun-07 4:11

Hi,

1)
I need to submit a HTML Form. It is like this

2) Now I need to submit this Form using C# ,and Get the Response.
3) How can I do it?. I need to do this dynamically becuase the hidden field values are changing.

Thanks in advance

Re: How to Submit a Html Form and Get Response Dynamically?

Krishnamenon14-Jun-07 5:15

Krishnamenon

14-Jun-07 5:15

hello,

first of all you need to have runat=server for these controls then only you can able to access from code behind

from:
krishna

How to ignore html tags in page

Sandeep Akhare14-Jun-07 3:38

Sandeep Akhare

14-Jun-07 3:38

Hi All
How to ignore html tags i want to show html tags in the Lable

Thanks and Regards
Sandeep

If If you look at what you do not have in life, you don't have anything,
If you look at what you have in life, you have everything... "

Re: How to ignore html tags in page

szukuro14-Jun-07 3:56

szukuro

14-Jun-07 3:56

Replace < with < and > with > in the label's text. The Literal control has a property Mode, which when set to "Encode" achieves the same thing.

Re: How to ignore html tags in page

Tarakeshwar Reddy14-Jun-07 3:58

Tarakeshwar Reddy

14-Jun-07 3:58

You can use &lt and &gt instead of < and >

Need Help

rahul.net1114-Jun-07 2:47

rahul.net11

14-Jun-07 2:47

HI Everybody
i am new in asp.net.I am currently working on a e commerce project.
Can anybody tell me how to change items on home page on every page refreshed.
Whenever user refreshed a page i have to show new items every time on home page
which is coming from my database.i ma using asp.net with vb.net.

Thanks in advance.
Rahul

Re: Need Help

Craster14-Jun-07 3:18

Craster

14-Jun-07 3:18

Presuming you have some sort of item ID for each item in the database, generate a random number between the lowest and highest values in your database, and feed that number into the query that pulls the item to be shown out of the database. If you want to show multiple items, you'll need to check for duplicates.

Re: Need Help

leckey14-Jun-07 4:16

leckey

14-Jun-07 4:16

As you are new please note the following:
1. Please read the forum guidelines. Messages should have appropriate titles. Not 'help' or 'urgent.'
2. You have a previous post of garbage. Please delete this.

______________________
stuff + cats = awesome

rahul.net1114-Jun-07 2:44

rahul.net11

14-Jun-07 2:44

SMTP Exception

DKalepu14-Jun-07 2:28

DKalepu

14-Jun-07 2:28

Hi All,

first of all, I am extremely sorry for asking the same question again!

my problem is i am trying to send an email in asp.net 2.0. But I keep on getting an exception whenever i try to send..

Here is the exception
Send failure: System.Net.Mail.SmtpException: The operation has timed out. at System.Net.Mail.SmtpClient.Send(MailMessage message) at Default2.btnSubmit_Click(Object sender, EventArgs e)

and here is my code:

protected void btnSubmit_Click(object sender, EventArgs e)
{

SmtpClient smtpClient = new SmtpClient();
MailAddress objMail_From = new MailAddress("username@gmail.com");
MailAddress objMail_To = new MailAddress("username@gmail.com");
MailMessage objMail = new MailMessage(objMail_From, objMail_To);
objMail.Subject = "Email-Test Example";
objMail.IsBodyHtml = true;
objMail.Body = "<html><head><title>Sending E-mails with ASP.NET 2.0 using CSharp</title></head><body>" + "Company : " + lblCompany1.Text + "" + "Address : " + lblAddress1.Text + "" + " Telephone :" + lblTelephone1.Text + "" + " Fax :" + lblFax1.Text + "" + " Email : " + lblEmail1.Text + "" + "Comments : " + lblComments1.Text + "" + "</body></html>";
objMail.Priority = MailPriority.High;
smtpClient.Host = "smtp.yahoo.com";
smtpClient.Credentials = new System.Net.NetworkCredential("username@gmail.com", "xxxxxx");
smtpClient.UseDefaultCredentials = false;
smtpClient.EnableSsl = true;
smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
try
{

smtpClient.Send(objMail);
Response.Write("Your mail has been sent");
}
catch (Exception exc)
{
Response.Write("Send failure: " + exc.ToString());
}

}

and in the web.config i put it like this:

<configuration>
<system.net>
<mailSettings>
<smtp>
<network
host =" smtp.gmail.com"
port =" 587"
userName = "username@gmail.com"
password ="xxxxxx"/>
</smtp>
</mailSettings>
</system.net>
</configuration>

_________

could any one please help me on this... plz..

Thank in Advance.

Re: SMTP Exception

szukuro14-Jun-07 2:43

szukuro

14-Jun-07 2:43

DKalepu wrote:
smtpClient.Host = "smtp.yahoo.com";
smtpClient.Credentials = new System.Net.NetworkCredential("username@gmail.com", "xxxxxx");

Gmail credentials with yahoo smtp server? Confused | :confused:

You probably should use Gmail's smtp in this case.

Re: SMTP Exception

DKalepu14-Jun-07 2:50

DKalepu

14-Jun-07 2:50

oops...... I pardon for it! that was such a silly mistake... Mad | :mad:

i hv changed it to gmail smtp..it throws anoter exception now:

Send failure: System.Net.Mail.SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required z15sm3365130pod at System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response) at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, String from) at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, SmtpFailedRecipientException& exception) at System.Net.Mail.SmtpClient.Send(MailMessage message) at Default2.btnSubmit_Click(Object sender, EventArgs e) in

------

Re: SMTP Exception

szukuro14-Jun-07 3:50

szukuro

14-Jun-07 3:50

I tried you code and it seems the line smtpClient.UseDefaultCredentials = false; causes this Exception, so I commented it out and then it worked just fine.

to clear all the textboxes in web page

codingrocks14-Jun-07 1:59

codingrocks

14-Jun-07 1:59

i wanna clear all the text boxes in the web page in asp.net

i wrote a function in the code like this ....

private void cleartextBox(System.Web.UI.WebControls.TextBox cc)
    {
        foreach (Control c in cc)
        {
            if (c.GetType().ToString() == "System.Web.UI.WebControls.TextBox")
            {
                c.text = "";

            }
                            
        }
    }

plz help me....

SAJAN A PILLAI

C#.NET Programmer
TELESOFT INDIA PVT LTD...
BANGALORE

Re: to clear all the textboxes in web page [modified]

pradeep kumarappagari14-Jun-07 2:09

pradeep kumarappagari

14-Jun-07 2:09

Control myForm = Page.FindControl("Form1");
foreach (Control ctl in myForm.Controls)
{
if(ctl.GetType().ToString().Equals("System.Web.UI.WebControls.TextBox"))
{
ctl.Text="";
}
}

it will work...check it... Blush | :O

-- modified at 8:14 Thursday 14th June, 2007

Pradeep Reddy

Re: to clear all the textboxes in web page

Blue_Boy14-Jun-07 2:10

Blue_Boy

14-Jun-07 2:10

private void ClearTextBoxes(params [] TextBox txts)<br />
{<br />
     foreach (TextBox TB in txts)<br />
     {<br />
           TB.Text = "";           <br />
     }<br />
}

I Love SQL

Re: to clear all the textboxes in web page

Sylvester george14-Jun-07 2:11

Sylvester george

14-Jun-07 2:11

foreach(Control control in Page.Controls )<br />
								foreach (Control childControl in control.Controls)<br />
								{<br />
									<br />
									if(childControl is TextBox)<br />
										((TextBox)childControl).Text = string.Empty;<br />
<br />
								}<br />

Regards,
Sylvester G
sylvester_g_m@yahoo.com

Re: to clear all the textboxes in web page

dhulipudi14-Jun-07 3:34

dhulipudi

14-Jun-07 3:34

private void Reset()
{
Control myForm = Page.FindControl("Form1");
foreach (Control ctl in myForm.Controls)
{
if (ctl.GetType().ToString().Equals("System.Web.UI.WebControls.TextBox"))
((TextBox)ctl).Text = "";
}
}

---Hope it helps...
JJ

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