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hi i am using the .net 2.0 treeview control with populateOnDemand (so when i click the + sign on a treenode it fires a DB query to populate its children - using code similar to http://msdn.microsoft.com/library/en-us/dnvs05/html/treeview.asp?frame=true#treeview_topic6)
But my problem is - when the treeview gets updated - collapsing and expanding a node does not go back to the DB and uses the local cache for showing its children. Is there a way to force it to goto the DB when i know it needs to go?
thanks in advance. 
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I am very new to ASP.NET, and am working on a web form with C# behind. I need to save session data as soon as the user fills it in/selects it so that it can be recovered if they leave the page and come back. I was able to get this to work using TextChanged and SelectedIndexChanged events to save the approriate data using this.Session["key"] = mydata sort of thing. I could then load the saved session data the next time the page was loaded. However, this required me to use AutoPostBack ="True" on all my form fields and has the form posting back after the user changes any form element.
I would like to be able to update the session data in the background without posting back and refreshing the page every time. I know this can be done using some sort of hidden iframe or AJAX type of thing, but I am really lost. If anyone could point me in the right direction it would be greatly appreciated. Thanks in advance.
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Anthem.Net[^] is one of the best AJAX framework I can find for .Net.
Since it can do postback through XmlHttpRequest (where you don't need to refresh the page) I hope it can solve your problem.
You can use it just like normal ASP.Net controls.
"Democracy is two wolves and a sheep voting on what to have for dinner" - Ross
Edbert
Sydney, Australia
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Hi!
I have a page (say parent page) which has a button(Button1). When the user clicks on 'Button1', a popup screen(child page1) pops up. This child page has a lot of controls. When the user clicks on one of the buttons on this child page , the childpage1 closes and the values entered in child page are displayed on the parentpage controls. I have implemented this using showModalDialog() , __doPostBack() (for the button Button1) and Page.GetPostBackEventReference(Button1 ,string.Empty).
The part mentioned above is working absolutely fine.
Now, on the same parent page, I have one more button (Button2), which when clicked also opens another pop up page(child page2). In this child page2, I have drop downlist & listbox. The dropdownlist has autopostback (= true) which fills up the listbox.
My problem is that, it doesn't fill up the listbox. I have run the debugger within the code-behind , and found that , the items get filled in the listbox but it never shows on the screen.
I have implemented this page also with the above mentioned method. I don't understand what the reason is.
Can anybody please suggest.
Thanks and regards,
ap.
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Hi
till now i had been using a contol which used to take sql statement for
sorting .
the sql statement looked like "select * from emp order by 2 desc"
But now i am using a dataset which i am getting thru executing a stored procedure.
I am converting dataset into dataview and maintaining its view state
But the problem is i have to sort like the above sql command by ordinal.
is it possible to do the same in dataView.If so pls let me know how to do it.
thks in advance
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did you try the sort propert of DataView?
Nav.
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I created a .net web service which uses WSE 2.0 for authentication, this works great and the app has been in production for almost a year now. The problem is we have a client that wants to consume the service using Delphi 7.0 and isn't able to pass the authentication. If you have worked with Delphi consuming a WSE authenticated web service I would appreciate any insight you can provide to resolve this.
Thank you,
Jason W.
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what is the best why to cereate a dynamic forms builder for buttons labels textboxs
with the ability to move and delete controls and saving to xml
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Have you looked into using the PlaceHolder control?
Jason W.
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I have an application where the user can enter new part numbers. I have a datagrid. They push a button to insert a new line. Since I am adding a new row to the dataset, I have to first initialize the dataset, table, etc.
Where I am running into problems is when the user enters more than one blank line. I can add the first one no problem. But if I want to insert a second blank line, the page always postsback and just resets that first line.
Is there a way to say, "For the first row, initialize everything, but for the second row and beyond, stay on the same page!"
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One solution is to disable the insert new button once the new row has been created. How are you binding the data to the grid? Are you doing so at design time, do it from the code behind instead and then you can bind the data whenever you want.
how vital enterprise application are for proactive organizations leveraging collective synergy to think outside the box and formulate their key objectives into a win-win game plan with a quality-driven approach that focuses on empowering key players to drive-up their core competencies and increase expectations with an all-around initiative to drive up the bottom-line. But of course, that's all a "high level" overview of things
--thedailywtf 3/21/06
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private void Button2_Click(object sender, System.EventArgs e)<br />
{ <br />
<br />
DataGridItemCollection items = dgParts.Items;<br />
int rows = items.Count;<br />
if (rows == 0)<br />
{<br />
<br />
BindData();<br />
DataTable dt = ds.Tables["Rest"];<br />
DataRow row;<br />
row = dt.NewRow();<br />
strPartNumberInputReference = txtSearchPart.Text;<br />
row["PartNumber"] = strPartNumberInputReference; <br />
row["DrawingNumber"]=DBNull.Value;<br />
row["DrawingRevision"]=DBNull.Value;<br />
row["DwgPath"]=DBNull.Value;<br />
<br />
dt.Rows.Add(row); <br />
dt.AcceptChanges(); <br />
<br />
dgParts.DataSource=dt; <br />
dgParts.DataBind();<br />
Session["test"]=ds;<br />
}<br />
<br />
else<br />
{<br />
ds = (DataSet)Session["test"];<br />
DataTable dt = ds.Tables[0];<br />
DataRow row;<br />
row = dt.NewRow(); <br />
strPartNumberInputReference = txtSearchPart.Text;<br />
row["PartNumber"] = strPartNumberInputReference; <br />
row["DrawingNumber"]=DBNull.Value;<br />
row["DrawingRevision"]=DBNull.Value;<br />
row["DwgPath"]=DBNull.Value;<br />
dt.Rows.Add(row); <br />
dt.AcceptChanges(); <br />
dgParts.DataSource=dt; <br />
dgParts.DataBind();<br />
}<br />
<br />
}
Any ideas? Thanks for your help!
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Can any one tell me how how to read a tiff extention file in asp.net.
Roopesh Singh Gangwar
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what do you mean by read?
To load into a byte array you can do the following.
byte[] newFile = System.IO.File.ReadAllBytes(@"\YourFile.tif");
how vital enterprise application are for proactive organizations leveraging collective synergy to think outside the box and formulate their key objectives into a win-win game plan with a quality-driven approach that focuses on empowering key players to drive-up their core competencies and increase expectations with an all-around initiative to drive up the bottom-line. But of course, that's all a "high level" overview of things
--thedailywtf 3/21/06
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Thnks. Actaully our need is to extract the text information from a tif file which we get as a attachment thru email and then need to compare it with some specified text. Is there any way of doing that.
Roopesh Singh Gangwar
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I want to detect if the client browser is using popupblocker or not.. or is there any solution to popup a window regardless of that popblocker as Hotmail and yahoo shows popupwindow on deleteing of emails
thanx in advance
R A M
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Hi,
What is the method you r using to show popup?
Sushant Duggal.
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function openMyWindow(){
var PagetoPopup;
PagetoPopup= '<%=Session["app_path"]%>' + "MyWindowName.aspx";
var newWin = null;
newWin = window.open(PagetoPopup,"MyPopupWindow","toolbar=no, location=no, directories=no, status=yes, menubar=no, scrollbars=no, resizable=yes,titlebar=0");
if ( (newWin == null)
|| (typeof(newWin) =="undefined")
|| (typeof(newWin .location.hash) != "string") ) {
alert('Please ensure that pop-ups are enabled!');
} else {
if (self.name != 'MyPopupWindow') {
top.close(); // Use this if you want to close the main/parent window ; otherwise comment out this code
}
}
I hope this is what you wanted.The code notifies the user if the popup blocker is activated, so that the user can de-activate it and try to open the window again.
Vuks
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thanx alot Vuks .. i will get back to you if i face some problem in this script ..
thanks again
R A M
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Does somebody know if there is a maximum length on the ValueMember of a ComboBox. I think it is 30 but i cannot find any documentation on the matter. 
Ronald
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Hi, I am using C#.NET to create an instance of MS Access 2003. I try to open my Access Report, but the Application just hangs as soon as I get to the part where I open my Database.
Here is part of my code:
oAccess = new Access.ApplicationClass(); //No problem
if(!oAccess.Visible) oAccess.Visible = true; //No problem
sDBPath = "C:\\Reporting.mdb";
oAccess.OpenCurrentDatabase(sDBPath,false, ""); //PROBLEM IT HANGS!!!
// Preview the report:
oAccess.DoCmd.OpenReport(sReport,Access.AcView.acViewPreview, moMissing, moMissing, Access.AcWindowMode.acWindowNormal, moMissing)
My problem is that it stops on the line that attempts to open the DB AND DOES NOT CONTINUE FURTHER.Ohh by the way I wrote the same code in VB6 and it worked just fine.Please help.
Vuks
-- modified at 9:15 Thursday 6th July, 2006
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I need to create a chat engine for the website i am creating..The requirements are:
authorized to members only..
once they are authorized they can enter into chat page for sending and receiving messages..
no rooms to create...
everyone can see each other...
the page shouldnt be refresed on a whole....Can anyone help me with coding part or suggest me some good articles about chat form...I prefer no database,no javascript except for simple html...that can provide scalability and performance...as messages pass their number -50, first 20 statements will be deleted..etc etc..
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Hi Friends,
I have a data about the appointment for a date. when somebody click on a hyperlink, that appointment details should be exported in Outlook calendar of the client machine. I tried using java script, but i dont know the exact logic.If anybody can help me with some type of code, it will be a great help for me.
Thank you very much.
NIKI
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list of Email clients installed on my computer
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Reposting the same question every minute doesn't seem like it's working for you. Perhaps you should try another technique. I recommend posting the question to every forum, someone is bound to respond to your vvvvvvvvvvvvery urgent request 
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