Web Forms :: Checking A DropDownList For A Value?
Jun 1, 2010I am creating a DropDownList at runtime.How do I check if a particular value exists (code snippets in VB please)?
View 2 RepliesI am creating a DropDownList at runtime.How do I check if a particular value exists (code snippets in VB please)?
View 2 Repliesi have a datbase:a
table :a
values :
--------------------------------
a
--------------------------------
cake
breaad
lassi
mechroni
chocolate
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what i have is a dropdownlist1,chekbox1 and objectdatasource1 for getting the select query
what i need is checkbox values should fetch the values of table a and displayed inside in
dropdownlist1 and values are checked dynamically and the checked values should be shown in
gridview1
if any body knows the full code reply the code or mail me ponmanivannangj@mobiusservices.in
I am binding Dropdownlist from sqldatasource. Is it possible to check conditions with Dropdownlist on each item bound, based on the select command.
Code:
<asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="SQLDataSource1" DataTextField="emp_name" DataValueField="emp_id"></asp:DropDownList>
<asp:SqlDataSource ID="SQLDataSource1" runat="server" ConnectionString="<%$ConnectionStrings:ConnectionString1 %>" SelectCommand="select emp_id,emp_name,status from emp_master"></asp:SqlDataSource>
In this example code, when binding if the status of the employee is OffDuty then it must be highlighted in DropDownList.
i have a on my project a web forum for new users to register and another forum for registerd users to update there details my question is how do i check when the update or the new user insert occurs
if the mail address they use is not alredy used by another user ?
I have a class called 'Tutorial'. At the top of my page I declare the object as below: [Code]....
The last thing I have is an Add and Save button and what I would like to achieve is add/update the record based on if it exists or not. To do this I would like to check the state of the tutorial object to see if it has been loaded and use its id without needing to put it on the page for reference later.
Will the tutorial object still contain values after postback and how can I check if its been declared?
In my application, if I do not input the value into the textfield, it will show error message: "The value '' is invalid."
However, is it possible to check one more thing: the length of the textfield? For example, it will show the error message if I input more than 10 chars? And is it possible to change the message "The value '' is invalid." to "Missing Value"?
backfolder1=\systemnamefoldername
If
Not Directory.Exists(backfolder1) =
True
Then
Directory.CreateDirectory(backfolder1)
End
If
i am using the above code
but even if the folder exists it creates the directory
i have one multi line text box in my asp page.
while entering content to it , i want to high light the word by red underline if the spelling of word is not correct (just like in word)
i have to do it without using any button , instead while changing text.
I am using the following code to load user selected HTML files in a Literal control :
[Code]....
Its all working good. Now I want to check, if an html file contains any thing in its body tag (no tag, no text nothing) or not. How can I do that ?
I have written a windows based executable that runs certain scheduled tasks that user enters using a web site.Everything is working as they should, but recently users started complaining that when they schedule a task, it did not run at all.What I have found out was that sometimes the executable gets closed (some users close it accidently).
So I decided to show the scheduler status on the web page and I did the following:
Created a control table (table with one record) in my SQL database with a column called timestamp.
In my Windows application I have a timer that runs every 30 seconds. And I update the timestamp field with the current date and time.And in my web page I check to see the timedifference is <=2 (2 mineutes) with current date. This way I will know the scheduler status.
I am not sure whether this is a good method or not, because of those database calls every 30 seconds.
Could some one shed some light on this? Are they any better ways of doing this?
This seems like it should be easy..... I am pulling some results from a database and then comparing them to a checkboxlist ... if a checkbox item within a list of checkboxes is within this result list, then I want to check that box...this is an 'easy' version of what I am trying to do...
[Code]....
in my gridview i have a list of names that are bound.
in my aspx i have a list of names that i can select from.
i want to see if each selected name is already in the grid.
something like
if (li.Value == row.FindControl("Name").ToString())
In trying to upload images to a server, I often get the following error "Maximum request length exceeded.".
I have tried to check for the size in codebehind but it appears that the error comes from the service provider or something else because I never even get to debug it since the error appears even before the Page_Init Subroutine in codebehind.
What is the best method of checking for the image size and then resizing it dymamically to a maximum file size as well as length and width size.
Sometimes while registering on the website people don't provide correct details like name and e-mailIn order to check correct e-mail it is better to use e-mail activation link send to their e-mail.But how to make sure the user is providing correct name ?I am really impressed by the Facebook name recognition system, it we try to use any word which is not a name, it asks you to enter a valid name.Is there any way we can make use of asp.net requiredfieldvalidator to check if user is providing a correct name or not ?I know we can make use of requiredfieldvalidator to see how many alphabets / special symbols etc butIf we put minimum alphabet requirement - in that case user can enter "....." and can easily bypass the requiredfieldvalidator or a user can easily write "iamfakeuser" instead of name and bypass the requiredfieldvalidator.
question is how to check if name is correct or not just like facebook registration form ?
I use the following code to get the file name out of the URL.
[Code]....
This works fine if there is actually a page that shows up after a '/', I would also like to check for when there is nothing showingup after the '/'. My alert above shows nothing to be there, but how do I chack for the nothing. I have tried the folloiwng, but for some resaon it just ignores me. If I do an if statement, it doesn't pick up that there isn't anything there.
if (sPage = '') { alert(sPage);}
Even though there isn't anything there, it won't show the alert and acts as if there is actually something there.
I am using a rich textbox in my website, i need to check the spelling in the content of richtextbox. That i need to implement the spell checking class to check the spelling. give me the idea or sample code to achieve this.
View 1 RepliesIs there any difference in using the following for checking for an empty control.
If txtBox1.text.tostring isnot string.empty then
vs.
If txtBox1.text.tostring <> string.empty
vs.
If txtBox1.tetxt.tostring <> "" then
I have found plenty of examples where the checkboxes to be checked are within a datalist, gridview or other datacontrol like that.. but i dont have that setup..
I have individual checkboxes within my page and need to provide a way to check or uncheck them all..
I cant use a checkboxlist because of the layout of the page.. so not sure if it would be easiest with javascript or do it with the checked event for the single check box that will be used..
I know that may not be the best or cleanest way, but is there a better way?
Reason i cant use a checkboxlist for the larger set of checkboxes, is that a few of them will have additional fields that need to be completed if they chose certain checkboxes.. so i have those controls next to the checkbox that they belong with..
I have an application where the user uploads files.
GOAL:
I need to check the file name for special characters and replace them with an underscore. Is there a Select Statement OR IF Statement I can use to search the fileName for unwanted special charaters; those characters will be replaced with a blank or underscore?
I want to replace ampersand, Number sign, Apostrophe, and so on.
I have the following line of code:
[Code]....
If I submit the page.. and no radio buttons were selected I get an error that 'object not set to an instance' is there a 'quick and easy' way to say ... if 'NO ITEMS WERE SELECTED' .. skip this... basically.. IF NULL... skip?
how to check if a particular data in the database already, for example, i want to check if a username already exist in database, then the user cant choose that username.
View 6 RepliesI am beginner of asp.net and c#Currently i doing appointment website and need suggestions/ ideas. I have create a simple web form with Calender Control as picture below enable users to select date and time. At the calender control, i have set that users can only select tuesday and thursday every month using DayRender. After that i put a DropDownList to display the time.Next step, i want to store the data into database, for example UserA make appointment on Date 21 September 2010, Time 1100 and make it unavailable for other bookings. When UserB makes appointment on same Date and Time, it will display information that the slot is booked/unavailable. To implement this, what approach should i take?
[code]...
how to make Visible hidden on checking check box?
View 5 RepliesI get an error using [Code]....
View 6 RepliesI am using seperate buttons to control whether edit and delete row linkbuttons are enabled or not on the GV. When I click a buton to enable the edit linkbuttons on the GV and then click a linkbutton for a row that puts it in edit mode. Then if the Delete button is clicked I have code that disables the edit linkbutton and enables the Delete linkbuttons. But, if there is a row in edit mode and the delete button is clicked, the edit linkbuttons disappear and the delete buttons appear (as expected) but the row that was in edit mode does not have a delete linkbutton in it and the row is still in edit mode with no update/cancel buttons. When the delete button is clicked, if there is a row in edit mode, I need to cancel any edit modes in any row.
View 3 Replies