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How can i check if record already exist in sql-server database ...

Posted By:      Posted Date: August 27, 2010    Points: 0   Category :WPF
 
How can i check if record already exist in sql-server database ...


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How to check if record is added in access database

  

Hi,

I'm trying to put a registration page together in Visual Web Designer.

I would like to send a confirmation Email after someone is leaving his registration data and pressing the INSERT button.

The key fields in my database are: Email, Name, Surname, Address

Before I send the confirmation Email I would like to check if the email value entered in the form is realy added to the database.

Please for help in this matter. I was copy past already some C code in my page, therefore it will be fine if the code can be in C.

Again, I need help to:

- checking if record is realy added to database after pressing INSERT button

- setup the confirmation Email


Thank you in advance.

Frenkie


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Checking existence of a record in sql database using IF EXIST and reporting outcome on asp page

  

Hi

I have a page that inserts a record to an sql database and I would like to do the following:

(i) Check if a record already exist before trying do an insert

(ii) If a record exist, the page should be able to inform/display a message in a textbox informing the user that the record already exist.

 

I have seen a number of post on the internet that suggest that one possible solution is to write a sproc and use the T-sql IF EXIST function. However, I have NOT seen a complete code showing (a) how this can be done (b) how to call the sproc from an asp page (c) and MORE IMPORTANTLY how to display a message informing a user that a record already exist i.e. when the record already exist in the database.

 

Please have anyone got a complete working code that can achieve this preferably in c#?

 

Thanks

cu202


Check if record exists in mssql database c# code

  

Hello everyone!

I coded this page a while back, but I'm thinking there must be a better way to do this.  What I want to do is check real-time if various records exist in my database from a function in my C# code.  What I've done is added a sqldatabase onto my page, as well as a gridview.  Here is what I have done to verify if a record exists.

public bool RecordExists(string gName, DateTime gDate)
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        bool returnBool = false;
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        for (int i = 0; i < GridViewEvents.Rows.Count; i++)
        {
            if (DateTime.Parse(GridViewEvents.Rows[i].Cells[0].Text) == gDate)
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        SqlDataSourceEvents.SelectCommand = "SELECT ID, StartTime, EndTime, EventName, UserID, Details FROM EventTable WHERE (DATEPART(month, StartTime) = 

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I am using Linq

Before i start executing my query, want to check if the database connection is being established, i.e if the database server is up and running.

Incase database is down, display appropriate error message?

How can i do that?

 


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Does this look correct for saving a file/ new record to a database

  

So thank you for all your help so far, So I think i got this right,
but would like for you all to look it over to see if there is any
areas I might run into trouble with:

//using asp.net mvc 2
the table (sql server 2005, using entities framework)
"Pattern_Media"
table fields
"Pattern_Media_GUID  uniqueid 
"Pattern_GUID  uniqueid
"Media varbinary(max)  
"height int
"Width int
"Media_Type String (50)


the form:
<h2> Add Media to this pattern</h2>
<% Html.EnableClientValidation(); %>
<% Html.BeginForm("AddMedia", "Pattern", new { id= Model.Pattern_Guid} , FormMethod.Post, new {enctype = "multipart/form-data"}); %>
   
    <%: Html.Label("height") %>
    <%: Html.TextBox("height") %>

    <%: Html.Label("width") %>
    <%: Html.TextBox("width") %>

    <%: Html.Label("Media") %>
    <input type="file" id="Media" name="Media" />
   
    <input type="submit" name=

Connecting to MS SQL Server database using webmatrix.

  

Hi,

I am novice  user to raizor syntax using webmatrix and i am trying to connect MS Sql server database (instead of using .sdf file i am using .mdf file) using the tool webmatrix for startersite.

The connection string that i setup as follows.

<?xml version="1.0"?>

<configuration>

    <system.web>
        <compilation debug="false" targetFramework="4.0" />
    </system.web>
    <connectionStrings>
    <add name="OESConnectionString" connectionString="Data Source=.\SQLServer2005;AttachDbFilename=|DataDirectory|\OES_Data.mdf;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient" />
    </connectionStrings>

</configuration>

And i am using websecurity helper as well and the setup is as follows.

WebSecurity.InitializeDatabaseConnection("Data Source=INLTE5556\\SQLServer2005;Initial Catalog=OES;Integrated Security=True", "System.Data.SqlClient", "UserProfile", "UserId", "Email", true);

When i am trying to insert the user details into database i am getting the below error.

Format of t

Can this code be setup to run against the whole database instead of just 1 record at a time?

  

We have made some changes to this code to start capturing 1 new field of data and updating it as new records are added. But there is currently about 120,000 records more or less.. those records of course dont have the new field populated with anything..

We would like to run this logic that already in place and run it against the tables to update the fields 1 time. I think to make it easier, if it can be setup to expect the "valueTwo" variable, so that we can run it againt the individual codes instead of doing all the records at one time.. there are codes that only have a few records, so it would be best to test initially against the small code group.

thanks.

  
            strSqual = "insert into trans (trans_type_name, trans_date,sys_id,mod_user_id,show_ind, remoteCode, techName) values('" & valueTwo & "','" & TransDate & "',"&strSystemID&", 1,'T', '" & dbQuote(strUser) & "', '" & strTechName & "')"        
  
            getStaticRecordSet(strSqual)   
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            strSqual = "select max(transaction_id) as transaction_id from trans"  
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dear Friends


For my MCTS 70 -433 examination, I recently installed sql server 2008 and installed the sample databases too. but my issue is, in that book they have mentioned a database called "AdventureWorks2008" and the nice thing is I don't have a such a database with me in my sql server 2008. 


And the query is 

-- MERGE Statement
USE AdventureWorks2008
MERGE INTO	Sales.SalesOrderDetailHistory AS SODH
USING Sales.SalesOrderDetail AS SOD
ON SODH.SalesOrderID = SOD.SalesOrderID
AND SODH.SalesOrderDetailID = SOD.SalesOrderDetailID
WHEN NOT MATCHED BY TARGET THEN
INSERT (LineTotal, SalesOrderID, SalesOrderDetailID, CarrierTrackingNumber, OrderQty
, ProductID, SpecialOfferID, UnitPrice, UnitPriceDiscount
, rowguid, ModifiedDate, Cancelled)
VALUES(LineTotal, SalesOrderID, SalesOrderDetailID, CarrierTrackingNumber, OrderQty
, ProductID, SpecialOfferID, UnitPrice, UnitPriceDiscount
, rowguid, ModifiedDate, DEFAULT)
WHEN NOT MATCHED BY SOURCE THEN
UPDATE SET SOHD.Cancelled = 'True'
OUTPUT $action , inserted.* ;	


Please help me to overcome this issue and let me know where can I download that database too.


Thanking you

happy Coding


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Hi,

  I need to extract or get the schema from tables in my databse and what is the best way to do it. Is there any third party tool to do it??

 

Any idea will be appreciated..

Thanks

Karen


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