Saturday, March 16, 2013

Unique Constraint Violated Error Occuring For Update Query In Vb ...


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    2 Replies - 26 Views - Last Post: Today, 06:57 AM Rate Topic: -----

    #1 makad ?Icon User is offline

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    Posted Today, 06:27 AM

    i hav a table customer with cid as primary key, & a table mortgage where cid is used as foreign key.
    i hav created a form where user can add,update,delete records through form. the update query was working fine...but now its giving the above error again & again. when the form is loaded, the textboxes are popuated using databindings & then the user will edit as per his requirement...i also checked for the cid whether is present in customer table or whether it is not matching with the customer but everything is correct then too why is it giving this error....????


    Is This A Good Question/Topic? 0

    Replies To: unique constraint violated error occuring for update query in vb.net

    #2 modi123_1 ?Icon User is online

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    Re: unique constraint violated error occuring for update query in vb.net

    Posted Today, 06:47 AM

    What does your update statement look like?


    #3 makad ?Icon User is offline

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    Re: unique constraint violated error occuring for update query in vb.net

    Posted Today, 06:57 AM

    
cmd.CommandText = ("update mortgage set LOANID=(" & LoanId.Text & "),PRINCIPAL=(" & Principal.Text & "),INTEREST=(" & InterestRate.Text & "),PERIOD=(" & Period.Text & "), PAYMENTSTYLE=('" & paymentstyle.Text & "'),LOANSTARTDATE=('" & DateTimePicker1.Text & "'), LOANENDDATE=('" & LED.Text & "'), WEIGHT=( " & weight.Text & " ), INSTALLMENT=(" & install.Text & "),REMAININGINSTALLMENT=( " & rinstall.Text & " )  WHERE  CUSTID =  " & cid.Text & " ")  cmd.ExecuteNonQuery()

    This post has been edited by modi123_1: Today, 06:59 AM
    Reason for edit:: highlight the text and just click the 'code' button in the text editor


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    Source: http://www.dreamincode.net/forums/topic/315409-unique-constraint-violated-error-occuring-for-update-query-in-vbnet/

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