Welcome :Guest
Congratulations!!!

Top 5 Contributors of the Month
david stephan
yasminpriya
Gaurav Pal
Ram
christianasteves

### Update with unique random generated values.

Hi there, I have an issue with an update of a column with unique random generated values, using SQL 2005. What I want to achieve is to create unique username for a list of let's say 1000 rows. My approach, which may be wrong, is as follows: to create a view to retrieve a random generated number of 7 digits; to use a function that retrieves the number from the view and checks if it is unique in the table or not (if it is, the number is returned, if it is not, a new one will be generated and so on); to update the table using that random generated number. The problem is that it does not work. It does not generate unique numbers, not all the times (you have to test by running the code few times). I suspect it is something with the update, but not sure how to solve it. Here are the steps to reproduce the problem. Create the table: CREATE TABLE [dbo].[TB_Temp]( [ID] [int] IDENTITY(1,1) NOT NULL, [ADM_USERNAME] [nvarchar](7) COLLATE Latin1_General_CI_AS NULL, ) ON [PRIMARY] Add some test rows: DECLARE @i INT SET @i = 0 WHILE @i <= 1000 BEGIN INSERT INTO TB_TEMP (ADM_USERNAME) VALUES ('') SET @i = @i +1 END Create the view to random generate 7 digits numbers: CREATE VIEW vw_RandNumberForAdminUserName AS SELECT ROUND((9999999 - 1000000 - 1) * RAND() + 1000000, 0) AS RandNumber Create the function to retrieve the unique 7 digits number: CREATE FUNCTION [dbo].[fn

### Create unique constraint on a column which has null values

Hi All, I have a table suppose 'Temp' having one of the column as 'ColA' which has some null values as well as non null values. Now i have a requirement to create a unique constraint on it. We have tried but couldnt do it.Apart from having a trigger on insert and update statements is there any other alternate. Can any one please help me on this. Thanks & Regards, Srikanth

### Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign

Using Visual Studio with MySQL.In my XSD dataset I created a query. It runs perfect. I can preview the data fine.In my BLL I wrote code (see below) to retrieve the query results and I'm getting...Using db As New dsDemoTableAdapters.DemoTableAdapter Dim dt As New DataTable dt = db.GetDemo(DemoId) ' ERROR HAPPENS HEREFailed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.Why would previewing the data work but in code it fails?Any ideas?

### Unique values for a filed

Hi,

My requirement is, my filed should enforce unique values.Im using MOSS 2007. how to achive this? please guide me.Thanks in advance

### Selecting Unique Combinations of multiple row values

Hi,

I have a table called 'Permutations' that lists every single combination of 5 numbers that could be selected from numbers 1 to 10.

(the first few rows are as follows, there are 30240 in total):

Number 1| Number 2| Number 3| Number 4| Number 5|

1 | 2 | 3 | 4 | 5

2 | 3 | 4 | 5 | 1

3 | 4 | 5 | 1 | 2

4 | 5 | 1 | 2 | 3

5 | 1 | 2 | 3 | 4

2| 3 | 4 | 5 | 6

3 | 4 | 5 | 6 | 2

and so on.

I want to write a query that only returns the unique combinations of these. So, from the rows provided above, the only rows that the query would return would be

Number 1| Number 2| Number 3| Number 4| Number 5|

1 | 2 | 3 | 4 | 5
2 | 3 | 4 | 5 | 6

Is there an easy way of doing this (note that the correct query would return 252 rows)?

Thanks

### Datagrid Validation depending on whole collection - enforcing unique values

I have a situation where I have an IList<T> collection of objects bound to a datagrid. I have one property, name, bound to a DataGridTextColumn. I want to enforce the rule that name should be unique within the collection and was wondering what might be the best way to do it.

Most of the validation examples I've seen either validate a single cell or else validate a row, allowing you to compare several values within the same row. But I need to validate the value of a single cell based on the values in the entire collection.

### XML Nodes with Unique Values

Hello,

I Have 2 levels xml as sections & pages. I'm listing pages under each section normally using XmlDataSource, DataSourceId and XPathSelect in my repeaters. But I had a problemwhen I tried to only select the page with new="True" under a sipicific section. so I tried the following tags:

<asp:repeater id="rpFeatured" DataSource='<%# XPathSelect("page[@new='True']") %>' runat="server">

AND

<asp:repeater id="rpFeatured" DataSource='<%# XPathSelect("page[@new=\'True\']") %>

And Even solutions on
http://forums.asp.net/t/1181619.aspx

I'm on ASP.Net Framework 4.0 using VS 2010 & VB.Net

Is there anyway to fix that whithout using the code behinde?

h.sobhy

### Unique values for properties?

Hi!

I need a way to create unique values for a property in my custom server control..

In this case I will have the poroperty called "Name" and I neeed the value of Name to be unique for each "instance" of the control...

So for instance if I have a page with more then one instance of the control, I dont want the value of the Name property for these instances to be allowed to be the same..

...to put it kind of simple, if I dont remember this incorrect, I want it to be sort of like the ID property..but with another name then ID..

Anyone has any idea how to do this?

### How to Pass Values Between Web Pages ASP.NET

You can pass information between pages in various ways, some of which depend on how the redirection occurs. The following options are available even if the source page is in a different ASP.NET Web application from the target page, or if the source page is not an ASP.NET Web page:

Use a query string.

Get HTTP POST information from the source page.

The following options are available only when the source and target pages are in the same ASP.NET Web application.

Use session state.

Create public properties in the source page and access the property values in the target page.

Get control information in the target page from controls in the source page.

### How to Pass Values Between ASP.NET Web Pages

You can pass information between pages in various ways, some of which depend on how the redirection occurs. The following options are available even if the source page is in a different ASP.NET Web application from the target page, or if the source page is not an ASP.NET Web page:

Use a query string.

Get HTTP POST information from the source page.

The following options are available only when the source and target pages are in the same ASP.NET Web application.

Use session state.

Create public properties in the source page and access the property values in the target page.

Get control information in the target page from controls in the source page.

### jquery autocomplete multiple values

i got some samples and i did autocomplete using jquery , its working well for single input values

but i need to pass multiples values after one by one in the textbox. Is it possible to pass multiple

values in the textbox for autocomplete in jquery in asp.net?

### Unique content within master page based on conditions met

Hi all-

I would like to present users with unique content based on certain conditions being met as they land on the home page (default.aspx).  The condition logic will be in the VB code behind Page Load event. The content will go in a content placeholder as specificed from the master page.

However, the content change wouldn't be something small (ie making a panel or label visible or not) but rather it will be different HTML,  Divs and databound gridview content.  The HTML content will be stored in the database.

Can someone point me in the right direction for best practices on how to accomplish this?

Thanks!

### Unique ID throughout entire request

Greetings,

I am hoping somene here could advise me on a better solution to my present problem.  First a little background information on the application.

I have a web application using the 3.5 framework.  The structure of this application is as follows: UI -> WebService   -> Business Layer -> DataAccess Layer.   What I want to accomplish is for every request (click on a link or button) have a unique identifer that follows this request through its entire lifecycle.  This unique identifer can be accessible anywhere within this request.  We use Response.Redirects which could easily be changed to Server.Transfers (although I do not want to do that) but  the problem lies with the web service calls.  Currently, a GUID is set in the ApplicationRequest.  This GUID checks for a guid value in the RawURL and if so, assigns this value to a HttpContext Item.  If not, HttpContext.Items gets a new one created.  However, this idea is wrong and will need to be revisisted.  The bigger problem is with the web service calls.  Without changing every web service method signature, and every call for that matter, is there a way of getting this GUID there.  I created a web method in every web service so that each time I instantiate a web service object in the UI, before calling any

Hi,

This is quite strange. here is the issue:

Some Info:

1. I'm using a multi-select jqgrid.

2. I have my own delete button to delete multiple orders

The problem:

When i press the delete button on the pager of my jqgrid, the records are deleted from the database but JqGrid shows some records (4-5). On refreshing the grid, correct numbers of records are shown.

Here is the code:

function delorder() {
var amg = \$("#horder").getGridParam('selarrrow');
var cont = amg.length;
if (amg.length > 0) {

### How to cast integer values as an array of enum values?

Hello all!

I'm working with VS2010 Beta2, ASP.NET and Dynamic Data. I'm using VB but will certainly be happy to receive a C# example if necessary.

I used a few of Steve's examples (Writing Attributes and Extension Methods for Dynamic Data and Dynamic Data - Hiding Columns in selected PageTemplates) to create a custom property attribute to be applied to a dynamic data column and want it to accept an array of enum values (each value will represent a dynamic data page template where this column should not be displayed).  My new attribute works fine when I hardcode it like this, meaning the HideColumnIn attribute is properly populated with the array of enum values:

```<HideColumnIn(PageTemplate.List, PageTemplate.Edit)> _
Public Property My_DD_Column As Object
```

However, I want to store the values to be used for the HideColumnIn in the DB as integer values that correspond to the

### Passing values in pages

Hi! Friends..

how to pass the value from one page to another page in asp.net  with out Using State Management Concepts?

2.Session

3. QueryStrings

With out using the above should pass the values...

### Unique text value in databse column

Hi Everyone!

I know this is probably a very basic question but how do I keep a column's text values unique in SQL server (ie for a unique username)?  The column is not an integer it's varchar(50), and it's not the primary key but I could make it the primary key if recommended.

The front end could handle it;  where the user would enter text, it's validated, then a query is done to see if that username is available.  If so, then user can decide to choose it and an insert is done, if not they pick a new username and process repeats.  With this approach, the responsibility of keeping the value unique solely rests on the front end, nothing on the database side.

Is this the correct way to handle this?

Thank you!

 Categories:
 ASP.Net Windows Application .NET Framework C# VB.Net ADO.Net Sql Server SharePoint Silverlight Others All