ADO.NET :: StoredProcedure Avoid Duplicate Records?

Mar 31, 2011

IF NOT EXISTS (SELECT * FROM Programme WHERE Title = @Title) BEGIN SET @ErrorMsg =@Title + ' Already Exists' RAISERROR (@ErrorMsg,11,1) return END I am Using this code to avoid Duplicate records in Database. Which code I have to write in .aspx.cs Page To Show Error Message on .aspx Page..

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Avoid Insertion Of Duplicate Records?

Mar 17, 2010

I have a webform which users fill in and all fields are submitted to table. How do I check that the record doesn't already exist in the table before the data is submitted? And if the data does exist I'd like to display error message label.

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Forms Data Controls :: Delete One Duplicate Record Of Many Duplicate Records

Mar 15, 2010

I have a gridview with delete buttons for each record (I've used AccessDataSource). I have loaded the data in and have many duplicate records.

I just want to use the delete button delete each duplicate record while remains many duplicate records. For example:

I used the following query to load in duplicate records:

SELECT * FROM TableA WHERE ([ControlA] IN (SELECT [ControlA] FROM TableA GROUP BY [ControlA] HAVING (COUNT [ControlA]) > 1)))

ID ControlA PIN# FaceValue Date
delete 76637 128232 1234 5 6/4/2006
delete 72722 128232 1234 5 6/4/2006
delete 76638 234567 2345 10 7/3/2006
delete 72723 234567 2345 10 7/3/2006

What is the query to delete single duplicate record instead of deleting all duplicate records?

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Web Forms :: How To Select Records Using Storedprocedure

May 7, 2015

How do i search with stordprocedure instead of selecting from my code behind

protected void btnSingle_Click(object sender, EventArgs e) {
if (txtSingleDate.Text == "") {
ScriptManager.RegisterClientScriptBlock(btnSearch, this.GetType(), "alert", "<script>alert('Enter InvoiceNo ... !!')</script>", false);
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[Code] ....

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MVC :: Avoid Duplicate Entries In A Table?

Nov 8, 2010

I am writing a project in MVC . I have an Admin section wherby initially all the data is entered .

I have a table called STUDENTS fields STUDENT_ID (Primary Key and auto generated number) and field STUDENT_NAME .

I have a controller , model and view . I can add entries to this table but how can I make it error if same name is entered again - .

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In MVC And Entity Framework, How To Avoid Duplicate Rows

Mar 7, 2011

I'm new to ASP.NET MVC and I'm trying to implement an address manager.I'm using Linq2Entity Framework. I've got a table with contacts and one with phone numbers. These two tables are linked by a contact_has_phone_number table. The Entity Framework enables me to get all phone numbers that are assigned to one contact. This is done by calling contact.PhoneNumbers which returns a collection of phone numbers.

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SQL Server :: Write Sp-sql To Avoid Duplicate Values?

Dec 12, 2010

as i am new to ASP.NETi have a database for employee appraisal for a company. in that table

appraisalid(primary key),


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Avoid Duplicate Items When Databound Control Gets Bound Twice?

Feb 1, 2010

How do you avoid duplicate bound items in this scenario: There's a databound control on a page (a DropDownList in this case, though I don't think it matters). It has AppendDataBoundItems set to "true". Somewhere in the code, a DataSource is set and DataBind is called. So this control is bound explicitly. You have a bunch of other things to bind on the page, so you call Page.DataBind.

Your databound control now has duplicate items in it. It was (1) bound explicitly, then (2) Page.DataBind bound it again. Since AppendDataBoundItems was true, the second bind appends to the first, and you end up with double the items. A couple limitations: The explicit call to DataBind on the control is done through some centralized code, and would be painful to change. i really need to bind the rest of the page in aggregate (via Page.Databind()) because there's too many other databound elements to do it individually without writing a ton of individual calls.

I need a method like... Page.DataBindExceptIfTheyHaveAlreadyBeenBoundDuh()

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Web Forms :: Avoid Duplicate When User Hit Refresh Button?

Feb 16, 2010

I have a receipt page for my clients that will display their info and they will get notify by an email message. Here is the problem: when user hit refresh button from a brownser, it will send duplicate email message to the user.

This is what i have:

void Page_Load(object sender,
EventArgs e)
{ if(!IsPostBack)
protected void SendEmail()
{ //here is my function for email

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Data Controls :: Check And Avoid Duplicate Values In GridView?

Jan 24, 2016

I have 3 textboxes and one submit button outside gridview. This textboxes submit value to gridview.

I want to be able to check and stop duplicate value in gridview.

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Forcing Https And Avoid Duplicate Urls Using IIS7 Url Rewrite Module

Feb 16, 2011

I need to force every request to (always with https and www)

The site is hosted in GoDaddy and I need to do it via IIS7 URL Rewrite Module.

I've been able to do the HTTPS redirect with the following code:

<rule name="Canonical Host Name" stopProcessing="true">
<match url="(.*)" />
<add input="{HTTP_HOST}" pattern="^$" />
<action type="Redirect" url="{R:1}" redirectType="Permanent" />

Test cases -> OK -> NOT WORKING

I guess the condition is not being satisfied when I enter in the browser, so there's no redirect and the page serves as HTTP instead of HTTPS.

I think I just need to modify the condition pattern, but I have almost nothing regex knowledge and I need this asap.

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Web Forms :: Avoid Duplicate Insert After Postback When Browser Refreshed Or F5 Pressed

Dec 14, 2011

After postback if user presses F5 or refresh duplicate values are inserted.

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How To Change [dbo].storedprocedure To [myusername].storedprocedure

Oct 29, 2010

I developed a website in my local machine using and sql.

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ADO.NET :: Check For Duplicate Records

Dec 14, 2010

I want to check for duplicate records,if the record is already inserted then "record has already been inserted" should appear or else if its a new record then it should be inserted.. This function is inserting even if it exists and showing the error msg..

Sub CheckForDuplicateRec()
Dim da As SqlDataAdapter
Dim ds As New DataSet
Dim dt As New DataTable
cmd = New SqlCommand("Select * from Table3 where Name='" & txtname.Text & "' AND FName='" & txtfathersname.Text & "' AND MName='" & txtmothername.Text & "' AND Add1='" & txtadd.Text & "' AND Add2='" & txtadd2.Text & "' AND Add3='" & txtadd3.Text & "'
AND City='" & txtcity.Text & "' AND State='" & ddlstates.SelectedValue & "' AND Pincode=" & txtpincode.Text & "", con)
da = New SqlDataAdapter(cmd)
dt = ds.Tables("Table3")
If dt.Rows.Count = 0 Then
cmd = New SqlCommand("Insert into Table3 (Name,FName,MName,Add1,Add2,Add3,City,State,PinCode) values('" & txtname.Text & "','" & txtfathersname.Text & "','" & txtmothername.Text & "','" & txtadd.Text & "','" & txtadd2.Text & "','" & txtadd3.Text & "','"
& txtcity.Text & "','" & ddlstates.SelectedValue & "','" & txtpincode.Text & "')", con)
lblError.Text = "Records already exists"
End If
End Sub

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Identify Duplicate Records Using LINQ?

Apr 2, 2010

I have two DataSet were mention below DataSet1 & DataSet2. DataSet1 records are already in User Database table. I would like to insert the DataSet2 records to User table, Before going to insert the Dataset2, I am trying to check the duplicate records in DataSet2 Compare with DataSet1. How to identify the duplicate records in DataSet2 using LINQ. I want to Get the List of Duplicate record set. Or Return the True Or False.
Note: In User table SiteId and UserName is Combinational primary key Records.

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Duplicate Records While Insertion Into Grid?

Mar 22, 2011

I have a page which consists of a grid and add new button. When the user clicks add new button he gets several fields to be entered. So, when he clicks submit I usually write a query which checks if there is an entry already in the database. In this case, I succeeded. However, my task is to also show the records identical and let the user decide to proceed or not.SO, I am not sure of how to proceed with this one. So, can anyone just help me in giving an idea on how to proceed with this one?

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Find Duplicate Records In Excel While Uploading?

Mar 25, 2011

I am a beginer in Developing ASP.NET webpage.

I want to restrict duplicates while uploading the excel data and to inform the user that the perticular cell in excel contains duplicate value which is already exist in Sql Database.(Duplicates should be check in Excel (EMP_ID) against SQL (EMPLOYEE_ID)


Table : Employees



Sheet: Sheet1

Column: EMP_ID

Message should display as:user cannot upload the data to with duplicate values. Kindly remove the duplicate fields and re-upload.

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DataSource Controls :: How To Remove Duplicate Records

Jan 29, 2010

I am using visualstudio C# with Sql server. I want to delete previous duplicate values if exists while inserting new values into the table.

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DataSource Controls :: SQL Insert - Duplicate Records

Apr 2, 2010

I have code for inserting a record into the db, it works fine from the admin part of my website but when i put it on the customer side duplicate records are inserted into the db, any ideas? I cant for the life of me see why. I have just also noticed that when i add the claim the first time it adds the duplicate entry, if i press the button again it only adds the entry once, if i refresh the page add the info again, 2 entries, click add again 1 entry?


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DataSource Controls :: Display All The Duplicate Records?

Jul 1, 2010

I want to display all duplicate records in the table.My query has to fetch all the records which are duplicate(First Name or Last Name).Also I want the ability to also pull names where there might be a middle initial placed in the end of the first name field, (i.e., "Maria Z. " vs. "Maria") as well.


ID FirstName LastName
1 Zach H Hoffman
2 Zach Hoffman
3 Troy Hoffman
4 Shawn Livermore
5 Prem S
6 Jony Hoffman H
7 Zach Modan

I need the query to filter.........

ID FirstName LastName

1 Zach H Hoffman
2 Zach Hoffman
3 Troy Hoffman
6 Jony Hoffman H
7 Zach Modan

I hope this example will give you clear idea..... I need SQL Query to perform this

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ADO.NET :: Duplicate Records Using Join In Linq To Entities?

Aug 5, 2010

I am having trouble with duplicate records. I tested .distinct() in several areas and nothing helps.

I got the search criteria from the PreviousPage. I then used this criteria to search QueryA.

I did a search using QueryA. I took the results, and put the IDs into an array.

I then did a search using QueryB, that matched the IDs in the array. QueryB is used for the ListView and to page records.

Using test records. QueryA results = 2 records. The array.length = 2. QueryB results = 3. ?

What am I doing wrong ?

Some of my Code:

myResults = (from r in QueryA
select r.ID).Distinct().ToArray();
totalrecords = myResults.Length; // = 2
using (ToHealthEN n = new ToHealthEN())


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Databases :: Delete Duplicate Records From MySQL Table?

Sep 20, 2010

I have Revision column in Quote table with time stamp (MySql table) now i am viewing the entire date and time my end user want to view only Date he doesnot want to see time how can i pull only date.i am displaying revision column in two ways one in grid view and another one in field value

Query in my Grid view

Dim query As String = "SELECT QuoteNumber,Revision,Vendor,PartNumber,status,Customer,Requestor from quotes"

On select check box in grid view, filed values will be loaded with data.

field value

txtRev.Text = dt.Rows(indx)("Revision").ToString()

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C# - SubSonic .Paged() Query Returns Duplicate Records

Feb 8, 2011

Using a SubSonic (2.2) SqlQuery object, I am querying a view that contains distinct rows from another table. The results of the query, however, contain multiple rows for certain rows in the view. It appears to be because of a join on a temporary table in the query generated to achieve paging. How can I avoid this duplication of rows?

Bonus points: I have to use the view because SubSonic can't do .Paged() and .Distinct() at the same time. Why not?

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ADO.NET :: Preventing Duplicate Records Being Returned From Linq To Sql Queries?

Aug 8, 2010

I've got a linq to sql query that pulls data from 2 different tables and contains an or statement:


The problem I've got is that some queries match both sides of the or statement so it returns the same record twice.

How can I eliminate these duplicates quickly and easily?

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DataSource Controls :: Deal With Insertion Of Duplicate Records?

Jun 10, 2010

I need to write a sql script which will scan for records in a table (Table1) and thencopy the records found into a second table (Table2). Table2 has the same table structureas Table1Table 1 has a primary Key for the first column named CustIdI thought this would involve A simple sql statement like:

FROM Table1

However I just realized that if A record already exists in Table2 and I try to inserta duplicate record into Table2, how should this be handled?Should I instead use an Update statement without a where clause?

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