Re: dynamic create textbox and button - ASP.NET Discussion Boards

Re: Diff between IspostBack and IsCallback

AdilSaud17-Feb-10 2:35

17-Feb-10 2:35

Hi,

Callback is used to contact web server(either submitting some information to Web server OR retrieving information from Web Server) in such a way that end user does not experience the processing of request.

In simple words when a callback request is made, system serves the request on the web server and present the information requested on the user interface without refreshing the entire web page on the end user's machine.

Techinally speaking when a callback request is made then Page_PreRender(Before, On and After) events are not fired and the requested information is handed to user interface, this will prevent the complete rendering of page and only the portion that requested the call back operation/request will be updated.

Callback improves the user experience, saves performance and saves the response time.

Postback is the normal process that happens when a page contact web server(either submitting some information to Web server OR retrieving information from Web Server) and it refreshes complete page on the web server.

In simple words when a postaback occurs complete page is rendered again.

Hope this helps, let me know if you need any further information on the same.

Thanx,
Adil... Smile | :)

)

to pass memcod with query string in window.open() method

Mayank Pathak, Chandigarh17-Feb-10 1:05

Mayank Pathak, Chandigarh

17-Feb-10 1:05

hello seniors,

i have to pass memcod with query string on link button's click and also have to open a popup on which i'll upload picture.
i want to open that popup using window.open() javascript method
please help me its very urgent.....

Mayank Pathak

Re: to pass memcod with query string in window.open() method

Pranay Rana17-Feb-10 1:34

Pranay Rana

17-Feb-10 1:34

Re: to pass memcod with query string in window.open() method

Brij17-Feb-10 1:47

Brij

17-Feb-10 1:47

Attach a javascript function on the linkbutton click.And in that function use window.open.Also pass the querystring in the url.

Cheers!!
Brij

Re: to pass memcod with query string in window.open() method

Mayank Pathak, Chandigarh17-Feb-10 5:54

Mayank Pathak, Chandigarh

17-Feb-10 5:54

thnx for the reply sir..
but i need a code snippet...
plz explain me with an example
thanks a lot

dynamic create textbox and button

test-0917-Feb-10 1:05

test-09

17-Feb-10 1:05

hi all I need to create a row or div containing 4 textbox and a button dynamically...
on button click that particular row or div with textboxes and button should display. For every button click a new row or div should be added
how can i do please help with any articles or some code...

thanx...

Re: dynamic create textbox and button

Brij17-Feb-10 1:49

Brij

17-Feb-10 1:49

did you try to create that dynamically.Use some placeholder create the dynamic controls and add them to the placeholder.
Let me know if face any problem.

Cheers!!
Brij

Re: dynamic create textbox and button

test-0917-Feb-10 2:16

test-09

17-Feb-10 2:16

this is what i tried im getting 4 buttons along with textboxes
but i want only single button
i want that row say for 'n' times but i could do it only once...

// called this in button click event

private void tablenew()
    {
        Table table1 = new Table();
        table1.ID = "tab";
        Page.Form.Controls.Add(table1);
        for (int i = 0; i < 1; i++)
        {
            TableRow row = new TableRow();
            for (int j = 0; j < 4; j++)
            {
                TableCell cell = new TableCell();
                Button lbl1 = new Button();
                lbl1.ID = "butn_" + i + "_" + j;
                TextBox lbl = new TextBox();
                lbl.ID = "TextBox_" + i + "_" + j;
                cell.Controls.Add(lbl);
                cell.Controls.Add(lbl1);
                lbl1.Text = "Button";
                lbl1.OnClientClick = "Btn_click";
                row.Cells.Add(cell);
            }
            table1.Rows.Add(row);
        }
    }

Re: dynamic create textbox and button

Brij17-Feb-10 2:39

Brij

17-Feb-10 2:39

I am not able to understand your actual requirement.If you want one button per row then add it upper for loop.

If you tell me your requirement categorically then may I'll be able to answer your problem.

Cheers!!
Brij

Re: dynamic create textbox and button

test-0917-Feb-10 17:50

test-09

17-Feb-10 17:50

my requirement is when i click a button
four text boxes should display and this has to repeat, i.e, for every button click i need to generate 4 text boxes...

thanx..

How to access the network shared foldder from the asp.net application without any security issues [modified]

ramki.pindi16-Feb-10 23:18

ramki.pindi

16-Feb-10 23:18

Hi Every one,

i developed an asp.net(2.0) applicaions which contains the attachments of the clients . these attachments are saved in the shared folder and retrive the file when the user requests.

if i maintain the application and the shared folders in the same system it will work properly.

if i maintain the application in one server and the file folder in the other server i face a lot of security issus like

1.Access Denied

2.Couldnot find the part of the path.

.....

for this i made an common account for the application server and the file server and also set impersonation to true.

Even the i got the couldnot find the part of the path error.

i already gave the everyone with full control to the shared folder and i added the common account and gave it to full control

Is there is any alternate for the save and retrive the files to and from the shared folder.

Please help me...

Thanks

Kesav

modified on Wednesday, February 17, 2010 5:32 AM

Re: How to access the network shared foldder from the asp.net application without any security issues

Pranay Rana17-Feb-10 1:39

Pranay Rana

17-Feb-10 1:39

go to run and open IIS manager by typing inetmgr

in that

go to Application > DefulatAppPool > right click and go to properties

In properties > go to identity tab and change predefiend to Local System

Object reference not set to an instance of an object.

BalasubramanianK16-Feb-10 22:56

BalasubramanianK

16-Feb-10 22:56

Hi All,

I am using Asp.Net 2.0 with C#, Crystal Reports (VS 2005). I am trying to open a report by passing 4 parameters but it gives an error called "Object reference not set to an instance of an object.". While I debug, I did not get err at any line. It goes smooth but finally it gives an error. Can you guide me?. Here is my code.

crvSTT.RefreshReport();
ReportDocument rptDoc = new ReportDocument();
rptDoc.Load(Server.MapPath("Reports/STTCertificateAnnual1.rpt"));
ParameterFields paramFields = new ParameterFields();

ParameterField pfYear = new ParameterField(); 
ParameterField pfBACode = new ParameterField();
ParameterField pfFromClientCode = new ParameterField();
ParameterField pfToClientCode = new ParameterField();

pfBACode.ParameterFieldName = "pBACode";
ParameterDiscreteValue pdvBACode;
pdvBACode = new ParameterDiscreteValue();
pdvBACode.Value = strUserId;
pfBACode.CurrentValues.Add(pdvBACode);
paramFields.Add(pfBACode);

pfFromClientCode.ParameterFieldName = "pFromClientCode";
ParameterDiscreteValue pdvFromClientCode;
pdvFromClientCode = new ParameterDiscreteValue();
pdvFromClientCode.Value = txtFromCC.Text;
pfFromClientCode.CurrentValues.Add(pdvFromClientCode);
paramFields.Add(pfFromClientCode);

pfToClientCode.ParameterFieldName = "pToClientCode";
ParameterDiscreteValue pdvToClientCode;
pdvToClientCode = new ParameterDiscreteValue();
pdvToClientCode.Value = txtToCC.Text;
pfToClientCode.CurrentValues.Add(pdvToClientCode);
paramFields.Add(pfToClientCode);

pfYear.ParameterFieldName = "pYear";
ParameterDiscreteValue pdvYear;
pdvYear = new ParameterDiscreteValue();
pdvYear.Value = "Current";
pfYear.CurrentValues.Add(pdvYear);
paramFields.Add(pfYear);                    
   
crvSTT.ParameterFieldInfo = paramFields;
crvSTT.ReportSource = rptDoc;
crvSTT.DataBind();

Thanks in Adv OMG | :OMG:

Balasubramanian K.

Re: Object reference not set to an instance of an object.

Dinesh Mani16-Feb-10 23:13

Dinesh Mani

16-Feb-10 23:13

What is the error that you get at the end when you step through the code?

Re: Object reference not set to an instance of an object.

BalasubramanianK16-Feb-10 23:26

BalasubramanianK

16-Feb-10 23:26

"Object reference not set to an instance of an object." is the error I got at my page by came through all the steps of my codes.

Balasubramanian K.

Re: Object reference not set to an instance of an object.

Dinesh Mani16-Feb-10 23:42

Dinesh Mani

16-Feb-10 23:42

During runtime check if rptDoc holds a value. May be rptDoc.Load(Server.MapPath("Reports/STTCertificateAnnual1.rpt")); returns null.

Re: Object reference not set to an instance of an object.

BalasubramanianK17-Feb-10 0:48

BalasubramanianK

17-Feb-10 0:48

"Expression has been evaluated and has no value" is the value I am getting at rptDoc.Load(Server.MapPath("Reports/STTCertificateAnnual1.rpt"));

But the report is available in proper place. What I have to do to solve this?

Balasubramanian K.

Re: Object reference not set to an instance of an object.

Dinesh Mani17-Feb-10 0:52

Dinesh Mani

17-Feb-10 0:52

If the Reports folder is available in the application root then try
rptDoc.Load("~/Reports/STTCertificateAnnual1.rpt");

HTH!

Re: Object reference not set to an instance of an object.

BalasubramanianK17-Feb-10 1:07

BalasubramanianK

17-Feb-10 1:07

This line throws error as "Load Report Failed"

Balasubramanian K.

Re: Object reference not set to an instance of an object.

Dinesh Mani17-Feb-10 1:10

Dinesh Mani

17-Feb-10 1:10

What is the value you get when you try Server.MapPath("Reports/STTCertificateAnnual1.rpt") in the immediate window?

Re: Object reference not set to an instance of an object.

BalasubramanianK17-Feb-10 1:16

BalasubramanianK

17-Feb-10 1:16

"Expression has been evaluated and has no value"

is the value I am getting at immediate window of rptDoc.Load(Server.MapPath("Reports/STTCertificateAnnual1.rpt"));

Balasubramanian K.

Re: Object reference not set to an instance of an object.

Dinesh Mani17-Feb-10 1:20

Dinesh Mani

17-Feb-10 1:20

Check the value of "rptDoc.IsLoaded" when using the original code rptDoc.Load(Server.MapPath("Reports/STTCertificateAnnual1.rpt"));

Re: Object reference not set to an instance of an object.

BalasubramanianK17-Feb-10 1:23

BalasubramanianK

17-Feb-10 1:23

It returns true.

I am getting the business objects' symbols(Export, print, Page nagivator, etc.) also at my page followed by my error.

Balasubramanian K.

Re: Object reference not set to an instance of an object.

Dinesh Mani17-Feb-10 1:35

Dinesh Mani

17-Feb-10 1:35

In that case, I've lead you in the wrong direction. The report document is not the cause of the error. Sorry.

Check the parms collection for values. Also check if the no of params you are passing matches what the report is expecting.

Other than that, I've no clues to what is going wrong.

Re: Object reference not set to an instance of an object.

BalasubramanianK17-Feb-10 2:39

BalasubramanianK

17-Feb-10 2:39

Actually, I pass 4 parameters only. If I pass the same into report directly, I can able to view the report. Through coding, I am trapped. However, you have spent your time for me. Thanks a lot.

Balasubramanian K.

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