Re: how to show gridview update after button click without postback - ASP.NET Discussion Boards

The problem during writing into an existing cookie, after re running my web application

hi to all forums members

can any one tell me what is error in mine code, It create every time a new cookie, but i have to write into existing cookie.
When i close my web application and re running my web application and, adding values into cookies it creates new cookies... why I m unable to understand....

following is my code...
protected void btnAddCokkie_Click(object sender, EventArgs e)
{
CreateAndAddCookiesValue();
}
private void CreateAndAddCookiesValue()
{
//Response.Cookies.Remove("ShowHistoryCookie");
if (Request.Browser.Cookies == true)
{
// Check the cookie Mycookie exist or not
if (Request.Cookies["ShowHistoryCookie"] == null)
{
// If does Mycookie does not exist then create the cookie
HttpCookie aShowHistoryCookie = new HttpCookie("ShowHistoryCookie");
Response.Cookies.Add(aShowHistoryCookie);

// set expires to the datetime maxvalue
Response.Cookies["ShowHistoryCookie"].Expires = DateTime.Now.AddMonths(1);
//Response.Cookies["ShowHistoryCookie"].Expires = DateTime.MaxValue; //DateTime.Now.AddMonths(1)

Response.Cookies["ShowHistoryCookie"]["URL"] += txtUrlLink.Text;
}
//Append UrlLink into existing cookie
else
{
string strCookie = Request.Cookies["ShowHistoryCookie"]["URL"].ToString();
string strCook = strCookie;
strCookie += "|" + txtUrlLink.Text;
char[] splitter = { '|' };
string[] arInfo = new string[10];

arInfo = strCook.Split(splitter);
int count = arInfo.Length;
int intResult=-1;
bool flag = false;

//count to Restrict cookie to Store 10 UrlLink
if (count <10)
{
//check to ensure that no duplicacy in UrlLink of cookies
foreach (string str in arInfo)
{
intResult = str.CompareTo(txtUrlLink.Text);
if (intResult == 0)
{
flag = true;
break;
}
}
if (flag==false)
{
Response.Cookies["ShowHistoryCookie"]["URL"] = strCookie;
}
}
//Sorting cookies to ensure that only ten recents Url link are added only...
else if (count >= 10)
{
foreach (string str in arInfo)
{
intResult = str.CompareTo(txtUrlLink.Text);
if (intResult == 0)
{
flag = true;
break;
}
}
if (flag == false)
{
for (int i = 0; i < 10; i++)
{
//Swaping
if (i + 1 >= 10)
{
arInfo[9] = txtUrlLink.Text;
break;
}
else
{
arInfo[i] = arInfo[i + 1];
}
}
strCookie = arInfo[0] + "|" + arInfo[1] + "|" + arInfo[2] + "|" + arInfo[3] + "|" + arInfo[4] + "|" + arInfo[5] + "|" + arInfo[6] + "|" + arInfo[7] + "|" + arInfo[8] + "|" + arInfo[9];
Response.Cookies["ShowHistoryCookie"]["URL"] = strCookie;
}
}
}
}
else
{
// Else display message that
// the browser does not accept cookies
Response.Write("This Browser does not accept cookies");
}

Vishnu Narayan Mishra
Software Engineer

Whoah!! What is this... I've created a web-application which runs on 144 seperate websites. Those websites are pretty equal and therefore pointing to the same Home Directory (local path). The app. is written in asp.net 2.0 and uses SQL Server 2005 as data source.

We're test running the app since a month or so and depending on the server load, the following exception occurs in about four days of running :

Failed to initialize the AppDomain:/LM/W3SVC/1993985091/Root

Exception: System.SystemException
Message: Failed to create AppDomain.
StackTrace:    at System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironment(String appId, IApplicationHost appHost, HostingEnvironmentParameters hostingParameters)
   at System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironmentAndReportErrors(String appId, IApplicationHost appHost, HostingEnvironmentParameters hostingParameters)

InnerException: System.OutOfMemoryException
Message: Exception of type 'System.OutOfMemoryException' was thrown.
StackTrace:    at System.AppDomain.nCreateDomain(String friendlyName, AppDomainSetup setup, Evidence providedSecurityInfo, Evidence creatorsSecurityInfo, IntPtr parentSecurityDescriptor)
   at System.AppDomain.CreateDomain(String friendlyName, Evidence securityInfo, AppDomainSetup info)
   at System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironment(String appId, IApplicationHost appHost, HostingEnvironmentParameters hostingParameters)

I've been trying to find the cause of this excepion but cannot find any reason why this exception occurs. I've been looking for memory leaks since there's obviously a memory problem... The websites are pretty frequently visited so we expect a large amount of traffic. Anyway, i'm pretty much determined to get the cause of this exception, but i'm quite stuck here...

Any suggestions?

.: I love it when a plan comes together :.
http://www.zonderpunt.nl

i have 3 gridview
on selected index change of first gridview(company), I populate second gridview(users) on second gridview selected index change i display a list of jobs that are available (in a listview) and list of jobs assigned (in gridview) and roles associated with that job (checkbox in a 3rd gridview)
when i need to assign a job to the user i simply do followings

1. click company from 1st gridview
2. click user from 2nd gridivew
3.select a property from available property
and click a button that adds a new record in the assigned gridview but i want to display the newly added row as soon as they hit assign button. i need to reselect the user to see the updated change. is there anyway i could achieve this without using session?

please advise.

Oh, you were crossposting. I see. Please don't do that.

If you want to update without postback, it has nothing to do with the session, it has to do with AJAX.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Hi Chris

you have mentioned using either URL parameter or view state. now i cant use URL parameter as its a requirement.
here are few codes to help u understand.

Private Sub gvUsers_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles gvUsers.SelectedIndexChanged
dsAssignedPropertyList = mydal.SecurityGetAssignedPropertyByUser(domainid, CompId, userid)
If Not dsAssignedPropertyList Is Nothing Then
gvAssignedProperty.DataSource = dsAssignedPropertyList
gvAssignedProperty.DataBind()
end sub

Protected Sub btnAssign_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAssign.Click
Dim myDAL As New clsDAL
Dim result As Boolean = False

userid = CInt(lblUserId.Text)
propertyid = lbAvailableProperty.SelectedValue
result = myDAL.SecurityAssignProperty(userid, propertyid)
If result Then
lblMsg.Text = "updated"
Else
lblMsg.Text = "failed"
End If

End Sub

In first method i am populating gvAssignedProperty and in second method i managed to insert the record and display a message but i really want to show the added record in a grid. could you please help?

thanks

I re-queried the DB again in button click event and bind the data.

and you still have the issue ? What is the issue then ?

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

So you're doing postbacks here, you said you wanted to avoid that ?

Is the issue that your postback adds a record but it's not visible when the postback ends ? You should be reading your datasource and databinding after you insert the record, or, in your prerender method. It depends on if you want to bind every time to save viewstate, or use viewstate to store records and save DB resources.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Hi! the issue is. I have a grid A which populate when selected index of parent grid B is changed.
In Grid A i have button template "Remove" which should remove the records. well for now it removes the record from DB but i need to again change the index of grid B to show updated record in a grid. so my issue is how could i display updated record in grid A right after I click remove.

cheers.

Hi everybody.
I have this porcion and i want ,from the onclick event, to get a simple string that is in the first column of the clicked row, in the gridview

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
e.Row.Attributes["OnClick"] = ClientScript.GetPostBackClientHyperlink(this.GridView1, "Select$" + e.Row.RowIndex.ToString();
string thefirstvalue = <---- what here to get the value?
}
maybe another way to get a value from gridview? Confused | :confused:

please help me.
thanks

I would suspect what you need to do, is to put the value in your event args, instead of hte index.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Let's say I have a products list, click in a select field of the GridView and i want the near product of the near column
Select productname
Select productname
Select productname
I have the index of the clicked row whit the posted method, but how I get the productname of that row?
please.
Thanks.

If you have the index, you get the data from the datasource, I guess. But, if you have the data already when you write the code, it seems more sensible to pass the data back, while you have it. The onitemdatabound event would then be the best place to write the code that passes the value back ( I'd probably just pass it on the URL, if it was me )

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

the index of the gridview is not the index in the DB, this productname is the primary key, so i want it.
The onitemdatabound is not one of the attributes of my GridView.
maybe somehow from onrowdatabound?
thank you very much for your help.

caradri wrote:
maybe somehow from onrowdatabound?

Yeah, that's what I meant.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Hi all,

I would like to know whether it is possible to reload a page within an asp:UpdatePanel, or can one only reload the values of certain components?

Many thanks in advance
Regards,

The only programmers that are better that C programmers are those who code in 1's and 0's Green Alien | [Alien]

Programm3r
My Blog: ^_^

I'm not sure if this is on the lines you are looking for but maybe have a look at ajax as that does postbacks without refrshing the entire page
hope this helps

Hi in vs2003 dll file name will be same as project name

But in vs2005 while publishing period how & where to say dll file name?,

Thanks & Regards,
NeW OnE,
please don't forget to vote on the post

Don bother any time u already got u?
donn u?

Why did you ask this twice ?

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Hi All
I need to implement Questions and Answers forums in my website.
it should be just like our CodeProject.com.
it should maintain hearachy of replies.
can anybody tell me how to imlement this in asp.net

please help me.

thanks.

Write the code.

I don't see what else I can tell you. You need a database to store the values, and you need to write code to display them. If you want a heirarchy, you need to store the id of the post you responded to and write code to thread the replies as you display them.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

thanks Christian Graus .
can you tell me thta how can I maintain on interface.
I mean what control i should use for this so that I can get hearachy
should I use nested gridview or some other control also help.

thanks.

How can i enable or extend my visual studio 2005 compactible with .dbml files
or Object Relation or class diagram files
Any Idea
Please spent a moment for me

Riyam Hussain
SE
IDSi Technologies
Infopark, Kochin

One more doubt, when we will create one project in vs2003,

It will create bin folder with in that project...,

In that dll file will be create during compilation time...,

But in vs2005 i create one website in that i didnt get bin folder then where the dll file will be create in vs2005?,

Plz any one help me for vs2005

Thanks & Regards,
NeW OnE,
please don't forget to vote on the post