Web Forms :: How To Check Validity Of User Name In .net Page

Jan 25, 2010

I've a user registration page where user needs to give user name input. But it needs to check the availability of username from database and than it'll set the username.

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I am createing user dynamially with the below code; string MyPassword = Membership.GeneratePassword(8,0).ToString(); Membership.CreateUser(TextBox7.Text, MyPassword, TextBox8.Text); but before I start creating, I would like to check if the user name is used before or not.

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I want to check if a user in User table is found either in UserName Column or in FriendUserName Column in UserFollow table and if yes display lable found, But if no display lable notfound. This code will be excuted onse a user logs in the connection code

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[code]...

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How to check if user is authenticated while using Forms Authentication ..?

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I have a .NET 3.5, C#, Silverlight 3, and LINQ Solution. My issue is this:

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I am creating an application which will offer option to users to select language manually instead of culture settings. But I need to offer only those languages which are installed/setup in browser. This will be used to judge user preferences.

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I am using two checkbox in gridview.I want check only one check box at a time from two checkbox user should not able to check two check box at a time.I m using group of check boxes and i want to allow user to check only one check box at a time like radio button properties GroupName.is this possible  to make check box work like radio button groupname?

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Web Forms :: How To Check Whether User Already Exists In Database

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I've got a form that will be used to send an email from a site. I'm using regular expression validators to limit the input to only appropriate characters in all of the fields. There are two things I want to protect against with the body portion of the email, sql injection attacks and the user entering too much text. The body portion of the email is entered using a text box with text mode set to multi line.

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i have gridview with page index 1,2,3,....... & having 5 records per page with 2 columns. i want to check checkbox from one page & also from 2nd page. for ex when i click on 2 checkboxes in 1st & change pageindex, again select one checkbox & again change pageindex to 1st then 2 checkbox in 1st page must be checked i.e their value must persist.

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[code]....

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Using C#.NET and VWD 2008 Express

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I have detailed view and a grid view, the DetailedView does the inserting into the Grid view. On my table( Ussing SQL Server), i have a username and year and allocation. What do i do so that when an allocation is given to a user for a year that already exit, it refuses.

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