Asp.net - Loop In Code Block On Click Argument?
Feb 13, 2010
Basically what i am trying to do is display a list of categories. And if the admin is logged in
i want to show some buttons next to each category. For example a button to delete it. The problem is that i dont know how to pass a parameter to the function that does the action.Like i specify that on button click the function 'DeleteCat' must be called but if i cant pass the ID of the category to be deleted this wont work.I know this can be done with commands and a repeater, but its not an option, i cant use a repeater.So apparanly this is what i am aiming for:
[code]...
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Sep 8, 2010
I want to print series in one cell of gridview sccording to condtiotion. I have used condition from ternary operator like
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but i want to print series instead of string Sequence1 and Sequence2 by loop.
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Apr 29, 2010
Can somebody show me a better approach of looping through a Try -Catch statement. I have something like this:
Try
dbConn.Open()
Catch ex As Exception
errmsg = ex.Message
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Oct 25, 2010
I have 2 separate code-block asp.Net expressions in an aspx markup, with an html content between (span element in the example below). In the first code-block, there is "i" as an increment variable for the for loop.Then the code-block is cut with an html content.And another code-block expression is opened but as I see I can reach the "i" variable which was declared in the previous code-block.
So, how asp.net handles -compiles- the pieces of code-block experrions declared in the mark up? Does it check the semi-colons and generates some anonymous methods which will end up with many calls to Response.Write in the last place?
<p>
<%for (int i = 0; i < 30; i++)
{
[code]....
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Jan 27, 2011
I am reimplementing an ASP.NET application with a main page (Call it "MyMainPage") which contains a user control. (Call it "MyNavControl") Within that user control is a menu control provided by a third party. Items added to this third party control have an "Href" property that is passed a URL. The code to create a menu subitem, contained within the codebehind of the .ascx for MyNavControl, goes something like this:
ThirdParty.MenuItem subitem = new ThirdParty.MenuItem();
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MyMainPage also contains a user control representing the bulk of the page body. Let's call that MainBodyControl.ascx. The Page_Load() for the main page sets up some session values which are used in the Page_Load() for MainBodyControl.When the menu item on the main page is clicked, the main page's Page_Load() will be passed the arguments specified in the menu item control's "Href" value. So:
protected void Page_Load(object sender, System.EventArgs e)
{
string sPageType = "";[code]....
Here's my question: I'm replacing the third party controls with standard ASP.NET controls, so the current "Href" property mechanism can no longer be used. What would be the best way, in some JavaScript assigned to a menu item's click event, to set a new value for "_page" or "_title" above.
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Feb 9, 2010
I'm trying to duplicate this link button in code behind, but I'm having problem with command & commandArgument
[code]...
First of all I don't see onclick in above code (not code behind) after rendering.
I probably have to do something different with""" linkbtn.Attributes.Add("onClick", "Imageswap")""""
What am I missing?
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Nov 26, 2010
<asp:CheckBox oncheckedchanged="chk1_CheckedChanged" ID=chk1 CssClass='<%# Eval("UserID") + "," + Eval("IsB") %>' runat="Server"/>
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Aug 13, 2010
I want to pass some argument to javascript function from code behind. My Javascript function as follow. how to send arg to this func. from server side code.
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return false;
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Apr 9, 2010
In .NET is it possible to get the HttpContext of the current page from within an external class?
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Aug 6, 2010
I'm reading an invoice dataset and building a html table with checkboxes and textboxes in it, and I put that code in a postback = false block, then i got a button and a literal. The button click will loop through the html table checkboxes to calculate a total and assign it to the literal and display it. I got everything working except one thing, every time i click the button, the html table refreshes and lost all the value in textboxes....even though I put the html building block in the postback = false block,it seems like it still won't preserve the values in the textboxes once there's a button click...Anybody knows a solution to that? I want the textboxes keep what values are there.
Here is the code part:
[code]....
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Feb 22, 2010
Given the following simplified code block in ASP.NET
<% foreach( item in Model) { %>
<%=item.OriginalText.OriginalText1 %>
<%} %>
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Apr 1, 2010
I know how to impersonate a user for the entire site but how best to impersonate for a block of code; WindowsImpersonationContext or NetworkCredential?
And how would this code look like?
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Mar 23, 2010
I have an extension method which I can use from the .cs codebehind of an aspx page, but if I try to do it in a code block in the aspx, it can't find the extension method. Is there something I need to add to the page?
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Dec 7, 2010
In my code i am running an exe file through a process call. How to handle exception generated by the exe file.
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Aug 4, 2010
I have the need to fire off a modal pop-up inline. I have a modal panel defined, and works when I click a test button on the page. Unfortunately I need it to work like this:
1.) A user clicks a 'Save' button
2.) In the code block for that button's Click event, there is a check for a certain constraint.
3.) If that constraint exists, I need to show the modal pop up and determine if the following code in the Click event is executed based off of the return of that modal pop up.
Easily accomplished using a Forms message box. But this is an ASP.net app. What I've tried so far is creating a button that uses a style with "display: none" and programmatically firing off that hidden button's click event. Unfortunately the code does execute but no modal pop up is displayed and the code continues to execute.
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Oct 22, 2010
I am trying to call a JavaScript function from my ascx control code behind in the catch blockI have tried the below two ways but they don't seem to work.
Page.ClientScript.RegisterClientScriptBlock(typeof(string), "script", "test();", true);
ScriptManager.RegisterStartupScript(Page, GetType(), "err_msg", "alert('error');", true);
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Oct 16, 2010
I have a html table, which I created dynamically. I can add rows at run time in it.In each row I have a file upload control and an upload button by side of it in a cell.I want to know how can I handle the click event of these buttons because they are generated in a for loop dynamically.
1st row ... | btn | if a new row is added, 2nd row will be visible.
2nd row ... | btn |
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Jul 27, 2012
l Im downloading Pdfs using WebClient I used below code
try {
WebClient wc = new WebClient();
Uri uriadd = new Uri(@"ftp://xxx.yyy..../httpdocs/FH/Foldername/" + clientorder1[i].Cloi_id + ".pdf");
wc.Credentials = new NetworkCredential("xxxx", "zzzz");
}
Its working fine but some times Gives Error like Object synchronization method was called from an unsynchronized block of code.. Why this Error coming ....
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Oct 25, 2010
When user cliick on the control before page fully loaded it goes to error page.
Following is the trace.
Execution Error
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
[code]....
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Apr 14, 2010
Loop through Datalist and get values of non-control items( cell values?) on button click
for (int i = 0; i < datalist1.Items.Count; i++)
{
datalist1.Items[i].
}
Name: '<%#Eval("ElementName")%>'
wanna access elementname... by looping through datalist on button click event... button is not on datalist
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May 29, 2010
I'm using VWD2010 express. using C# code behind.
What I need to do is update a label during a loop (simplified from my implimentation). If I can refresh the whole page or an update panel that would work too. I want to give the user more info than just "Please Wait...". So the extreamly simplified version of what I'm trying to do is:
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click Text="Button" />
protected void Button1_Click(Object sender, EventArgs e)
{
for(int i =0; i<=10; i++)
{
Label1.Text = i.ToString();
}
}
Because ASP runs all of it's code behind events before sending the HTML to the user it will not update the label text until after the entire loop has run. I've tried using and update panel and using the UpdatePanel1.Update(); command. I've turned off out buffering Response.Buffer=false; and Response.BufferOutput=false;. I've been searching forums for the past 2 days trying for find a solution. Is this even possilble with ASP or are we at the mercy of ASP only giving HTML to the user when after it's done with it's server side events?
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May 7, 2015
I tried to keep all the data in the gridview when paging, but when I try to save it, which appears in my database only when it is active pages .. ex: in the first and second page I have data in gridview .. when I save, the stored in the database only the first or second page of course .. so I like to keep all my data in gridview when paging..
i have tried using : foreach (GridViewRow row in GridCustomColumn.Rows) but it's not working..
string sql1;
foreach (GridViewRow row in GridCustomColumn.Rows)
{
[Code].....
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Aug 4, 2010
Im using enterprise Manager data access code block and have a table in sql server 2005 with a column type of 'bigint'
when querying against this table and adding in a parameter, there isnt a long datatype available, so is Int32 an equivalent ?
[Code].....
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Dec 9, 2014
I am building this simple quiz application using asp.net/vb.net and sql server for the database. Now what I want to happen is that when I click on submit button, it will count all the correct answers of the user based on the radio button he clicks.
I have two radio buttons and the correct answer for those two radio buttons is A, now if they click both A for those 2 radio buttons, they will get a score of two else if wrong, it won't count the incorrect answer.
Code:
Dim score As Integer = 0
If RbAnswers1.SelectedValue = "A" Then
For score = 0 To lbCorrectAnswerCount.Text.Count - 1
score += 1
Next score
If RbAnswers2.SelectedValue = "A" Then
[Code] ...
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Sep 23, 2010
Recently, I have read an excellent tutorial from asp.net, MVC music store.
I have discover that we can access to variable in strongly typed views like this:
[Code]....
It is very powerful!
Can we do the same with Web Form in aspx pages?
I ask this question because I think that ASP controls for data are very strict like gridview; in fact my real problem is that I want to make a loop in my apsx code and I think that I can't in Web form...
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