SQL Server :: How To Avoid Using Subqueries
Dec 23, 2010How can I avoid using subqueries and still be able to select the same results in a query like this;
[Code]....
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SQL Server :: How To Use Subqueries
Feb 12, 2011Actually i have created three tables -IMAGE[IMAGE_ID,IMAGE],REQUEST[REQUEST_ID,STATUS,REASON] and PROFILE where primary keys are IMAGE_ID ,REQUEST_ID and USERNAME respectively and USERNAME is present in IMAGE and REQUEST tables as foreign key......
i want to select image_id from table IMAGE where USERNAME='uName'[passed through querystring] and REASON='uploading is done' and i want to populate the data in dropdownlist but i dont know how to do that using sub queries...
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Dec 6, 2010When i am executing following query:
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SQL Server :: Subqueries Are Not Allowed In This Context. Only Scalar Expressions Are Allowed?
Jan 9, 2011[code]...
I get the Subqueries are not allowed in this context. Only scalar expressions are allowed - i am going to run into this quite alot so I figuredI'd better see what the right way is!
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Dec 12, 2010as i am new to ASP.NETi have a database for employee appraisal for a company. in that table
employeeid,
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[code]...
DataSource Controls :: Subqueries Are Not Allowed In This Context - Only Scalar Expressions Are Allowed
Mar 22, 2010i get the above error when i try to run this sql statement
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Server Control - Avoid Adding Multiple Javascript
Jan 26, 2010I created an asp.net Server control that derives from a LinkButton, and renders a small javascript function to the page. I want to use this control many times on the page, but just want the javascript to be rendered once on the page. On the other hand, I rather not manually add it in a js file, because i don't want to have a chance of forgetting to add the js file in the future.
View 3 RepliesHow To Avoid Adding Runat="server" Destroying Server Tags <%...%>
Jul 30, 2010Adding runat="server" is not rendering my server tags <%...%>
I have a masterpage with a few <li> for menu and since I have to set class=selected for the current page, I am using a little server tag to find the url and assign the particular class.
I have total of 10 <li> and not all menu is available to all types of user, I need to toggle few of the <li> if the user is not admin, so I have runat="server" added to them so I can set their visible=false through c#
Here is how it is at a glance:
<li runat="server" id="liBlog" class='<%= Request.Url.AbsoluteUri.EndsWith("/Blog") ? "selected" : "" %>'><a href="/Blog">Group Blog</a></li>
<li runat="server" id="liPoll" class='<%= Request.Url.AbsoluteUri.EndsWith("/Poll") ? "selected" : "" %>'><a href="/Poll">Poll</a></li>
<li id="liInvite" class='<%= Request.Url.AbsoluteUri.EndsWith("/Invite") ? "selected" : "" %>'><a href="/Invite">Invite</a></li>
<li id="liFavourite" class='<%= Request.Url.AbsoluteUri.Contains("/Favourite") ? "selected" : "" %>'><a href="/Favourite">My Favourites</a></li>
The <li> without runat="server" works fine, when on correct page the source code shows class="selected" or class="" as appropriate, the other <li> used to work fine too, until I decided to add the runat="server".
Once I added that runat="server", the whole block of class="" is being sent out to the html page, its not processing the server tags at all! I right click on the html and look at the source, it's being rendered as:
<li id="ctl00_ctl00_ContentPlaceHolder1_liBlog" class="<%= Request.Url.AbsoluteUri.EndsWith("/Blog") ? "selected" : "" %>"><a href="/Blog">Group Blog</a></li>
It's pouring out my server tags into the source code!
Why is this behaviour seen? How can I avoid it?
Why Does URLs Get Encoded In <link> Tags Within <head Runat="server"> And How To Avoid It
Jan 4, 2011(I have tested this with a vanilla asp.net site running from the webdev server and it is a problem here also):
I have the following markup in my .master file
[code]....
Clearly Asp.Net does something to encode the url. As it happens, I really need the head tag to be runat="server" and I would also like to be able to have "&" in link-urls within it is there some trick I can use to have my cake and eat it too?
How To Avoid XSS Vulnerabilities In MVC
Jul 8, 2010I recently noticed that I had a big hole in my application because I had done something like:
<input type="text" value="<%= value%>" />
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Avoid Reload Window In Xml?
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View 1 RepliesADO.NET :: How To Avoid Identity_insert To Set Max Value As Identity
Jan 18, 2011im using sql server 2008
as per microsoft, [URL]
when i execute the following
set identity_insert on
//insert statements here
set identity_insert off
the identity of the column is set to the maximum value. can i aviod this.
consider the following scenario,
my table has 2 rows as follows
id, name comm
1, John, 232.43
2, Alex, 353.52
now using the above code, when i insert
10, Smith, 334.23
as per the above link, sql server automatically sets the identity to 10. so for newly inserted records(without using identity_insert on), id automatically starts with 11.
i want the identity value to be 3, after using identity_insert on/off
How To Avoid Form Resubmission
Sep 21, 2010I'm developing ASP.NET applications and stuck with a "problem" relating to resubmit behaviour. I'm controling the re-submit using a counter in form submit event which disables the submit if it's already been posted. My application is a 3 step workflow and when the 3rd step is shown the transaction was submited from step2 to step 3. What's my problem? Well... i want to avoid the user to resubmit the data by pressing the F5 or all other possibility. I don't want to disable the key because may be workarounds. I'm wondering if i can remove the post data in a HTTP module that runs after the render was completed and right before the response is sent to the user.
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Dec 10, 2010I'm have a page which I sent a parameter through the query string.
If I'm retrieving it with Request.QueryString["Format"] I'm having troubles with the type 'CDDVD'. It's being returned as 'CD\DVD'. It's important I get this as the right string.
How do I avoid the extra backslash? Or even get rid of it later?
How To Avoid Duplication In Combo Box
Jan 10, 2011I have used the database data to combo box values. But the problem is i don't now how to avoid the duplicate data. for e.g In a single column name called "department " is used so many time but i wanted it only one time should be displayed the combo box.
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View 2 RepliesC# - Avoid An HttpException Due To Timeout?
Apr 26, 2010I'm working on a website powered by .NET asp/C# code. The clients require that sessions have a 25 minute timeout. However, sometimes the site is used, and a user stays connected for long periods of time (longer than 25 mins). Session_End is triggered:
protected void Session_End(Object sender, EventArgs e)
{
Hashtable trackingInformaiton = (Hashtable)Application["trackingInformation"];
trackingInformaiton.Remove(Session["trackingID"]);
}
The user returns some time later, but when they interact with the website, they get an error, and we get this email notification:
User: Unauthenticated User
Error: System.Web.HttpException
Description: Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request...
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So here's the question. How can I force instruct the user's browser to redirect to a "you're logged out" screen when the connection times out? (Is it something I should add to the Session_End method?)
C# - Avoid Paging On GridView?
Mar 4, 2010protected void Button3_Click(object sender, EventArgs e) //export
{
GridView2.AllowPaging = false;
GridViewExportUtil.Export("Сводка.xls", this.GridView2);
GridView2.AllowPaging = true;
}
I need to avoid pageing for XLS export :-/
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Jul 26, 2010I am using .net 3.5 framework and i am using repeater control in my application.I am using link button to display the records.Displaying 9 records in a page.Show all button is there.When i click on show all button(Result of 250 records) then the page is loading and hanging for some time anf then it is displaying the all records.I know the time taken between the server and the browser.But i need to avoid the hanging of the page and the loading time should be reduced.How to solve this issue.If the page contains 9 products then it is loaded quickly.But if it contains lot of images then it's hanged. some of my friends told to use the jquery but i have noo idea regarding jquery so can anyone give an solution for this.Till it's breaking my head.
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View 10 RepliesValidation Of Viewstate MAC Failed - How To Avoid It
Jan 25, 2010I know this is a very common problem and a quick search in google offers a lot of solutions. However I could only find one person that came across it in the same way I am and no-one answered their question.
The scenario which causes this is if the page has been left dormant for a period of time and then a button is pressed which runs some sort of command. This might be pressing the logout button or trying to submit a contact form after having walked away at some point and then returning and hitting Send.
I do not have posts or actions in my form, it looks like this: <form id="form1" runat="server">
I have also added the following line to my web.config: <pages enableEventValidation="false" iewStateEncryptionMode="Never">
C# - How To Avoid Repeating Namespace In Page
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View 1 RepliesWeb Forms :: Five Dropdownlist - How To Avoid Postback
Aug 3, 2010I have 5 dropdpwnlist in asp.net page.. the 5th dropdwpnlist will show data based on 4th dropdownlist. and 4th dropdwpnlist will show data based on 3rd dropdownlist. and 3rd dropdwpnlist will show data based on 2nd dropdownlist. and 2th dropdwpnlist will show data based on 1st dropdownlist... All dropdownlist has auto postback=true.. so it cause postaback each time.. i want to avoid postback coz it refresh all page again and again and shows data.. coz my aplication is in hosting server..
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View 6 RepliesC# - Get Dimensions Of An Image On The Web - Avoid Memory Hog?
Jan 6, 2011Im getting some images from a webpage at a specified url, i want to get their heights and widths. I'm using something like this:
Stream str = null;
HttpWebRequest wReq = (HttpWebRequest)WebRequest.Create(ImageUrl);
HttpWebResponse wRes = (HttpWebResponse)(wReq).GetResponse();
str = wRes.GetResponseStream();
var imageOrig = System.Drawing.Image.FromStream(str);
int height = imageOrig.Height;
int width = imageOrig.Width;
My main concern with this is that that the image file may actually be very large,Is there anything I can do? ie specify to only get images if they are less than 1mb?or is there a better alternative approach to getting the dimension of an image from a webpage?