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POPrevent duplicate enteries being inserted into SQL server db?
 

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  1. POPrevent duplicate enteries being inserted into SQL server db?
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    <p>net, razor, webmatrix, working with .cshtml pages.</p> <p>I am using a jQuery to open a modal form and using that form to insert data into the SQL db (SQLExpress 2012). I am trying to restrict duplicate enteries by using the following code but get a message from web page [object XMLHttpReques] instead.</p> <p>AddDiscount.cshtml code is:</p> <pre><code>@{ if(IsPost){ var db = Database.Open("A-LensCatFE-01SQL") ; var CCode=UrlData[0]; var Q1 = "SELECT * FROM dbo.tblPromos WHERE CustomerCode =@0"; var ds = db.ExecuteDataSet(Q1, CCode); if(ds.Tables.Count &gt; 0 &amp;&amp; ds.Tables[0].Rows.Count &gt; 0) { MessageBox.Show("Duplicates"); } else { var sql = "INSERT INTO dbo.tblPromos (CustomerID, CustomerCode, Discount, VAT, VATRate, iScription, SRPBasedOn)" + "VALUES (@0, @1, @2, @3, @4, @5, @6)"; var customerid = Request["customerid"]; var customercode = Request["customercode"]; var discount = Request["discount"]; var vat = Request["vat"] == "on" ? true : false; var vatrate = Request["vatrrate"]; var iscription = Request["iscription"]; var srpbasedon = Request["srpbasedon"]; db.Execute(sql, customerid, customercode, discount, vat, vatrate, iscription, srpbasedon); } } } </code></pre> <p>Your help is needed, many thanks.</p> <p>Stored Procedure code is:</p> <p>CREATE PROCEDURE dbo.spDiscDup</p> <pre><code>@CustomerID int =NULL, @CustomerCode nvarchar(max)=NULL, @Discount decimal(5,2)=NULL, @VAT bit =NULL, @VATRate decimal (5,2)=NULL, @iScription money=NULL, AS BEGIN IF EXISTS(SELECT * FROM tblPromos WHERE CustomerCode=@CustomerCode) ("Duplicates") ELSE INSERT INTO dbo.tblPromos (CustomerID, CustomerCode, Discount, VAT, VATRate, iScription, SRPBasedOn)" + "VALUES (@0, @1, @2, @3, @4, @5, @6) </code></pre> <p>END GO</p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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