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Problem in connection

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  • S sajjadlashari

    Dear All, I am working on a web site when i loading my web application the following error is acquiring i have written con in web.config file of web site and i am using OLEDB provider An exception of type 'System.InvalidOperationException' occurred in System.Data.dll but was not handled in user code Kindly tell me what should i do?

    A Offline
    A Offline
    Abhijit Jana
    wrote on last edited by
    #2

    Did you written those code inside Try-Catch Block ? Could you please post those line of code ?

    cheers, Abhijit

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    • A Abhijit Jana

      Did you written those code inside Try-Catch Block ? Could you please post those line of code ?

      cheers, Abhijit

      S Offline
      S Offline
      sajjadlashari
      wrote on last edited by
      #3

      I have written on load event of form where i am opening conncetion like con.open() on this line this error is acquiring An exception of type 'System.InvalidOperationException' occurred in System.Data.dll but was not handled in user code Additional information: The ConnectionString property has not been initialized.

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      • S sajjadlashari

        Dear All, I am working on a web site when i loading my web application the following error is acquiring i have written con in web.config file of web site and i am using OLEDB provider An exception of type 'System.InvalidOperationException' occurred in System.Data.dll but was not handled in user code Kindly tell me what should i do?

        C Offline
        C Offline
        Christian Graus
        wrote on last edited by
        #4

        Does this error happen locally, or just when deployed ? Perhaps it's that the deployed site can't see the database ?

        Christian Graus Driven to the arms of OSX by Vista.

        S 1 Reply Last reply
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        • S sajjadlashari

          I have written on load event of form where i am opening conncetion like con.open() on this line this error is acquiring An exception of type 'System.InvalidOperationException' occurred in System.Data.dll but was not handled in user code Additional information: The ConnectionString property has not been initialized.

          A Offline
          A Offline
          Abhijit Jana
          wrote on last edited by
          #5

          sajjadlashari wrote:

          con.open() on this line this error is acquiring

          Yes, It seems the Issue is with your connection string. Please verify the connection string name, database Server Name, and User id and password.

          cheers, Abhijit

          S 1 Reply Last reply
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          • C Christian Graus

            Does this error happen locally, or just when deployed ? Perhaps it's that the deployed site can't see the database ?

            Christian Graus Driven to the arms of OSX by Vista.

            S Offline
            S Offline
            sajjadlashari
            wrote on last edited by
            #6

            I am working on standalone computer locally

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            • S sajjadlashari

              I am working on standalone computer locally

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              Christian Graus
              wrote on last edited by
              #7

              OK, so when does the error occur ? Does any code run ?

              Christian Graus Driven to the arms of OSX by Vista.

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              • A Abhijit Jana

                sajjadlashari wrote:

                con.open() on this line this error is acquiring

                Yes, It seems the Issue is with your connection string. Please verify the connection string name, database Server Name, and User id and password.

                cheers, Abhijit

                S Offline
                S Offline
                sajjadlashari
                wrote on last edited by
                #8

                I have checked it again every thing is alright i also connected with an other server but still is same problem. Dim con As New OleDb.OleDbConnection con.ConnectionString = " DataSource = ABC; InitialCatalog = XYZ; Username = sa; Password = sa" This is the line of code where error is acquiring.

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                • C Christian Graus

                  OK, so when does the error occur ? Does any code run ?

                  Christian Graus Driven to the arms of OSX by Vista.

                  S Offline
                  S Offline
                  sajjadlashari
                  wrote on last edited by
                  #9

                  yes when i run the code and try to debug the connection to verify connection on form load event then error is acquiring.

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                  • S sajjadlashari

                    yes when i run the code and try to debug the connection to verify connection on form load event then error is acquiring.

                    C Offline
                    C Offline
                    Christian Graus
                    wrote on last edited by
                    #10

                    OK - the first thing to do in this case, is to debug the code and work out what line blows up. The next, is to post the line and your connection string, etc., if you can't work out the issue.

                    Christian Graus Driven to the arms of OSX by Vista.

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                    • S sajjadlashari

                      I have checked it again every thing is alright i also connected with an other server but still is same problem. Dim con As New OleDb.OleDbConnection con.ConnectionString = " DataSource = ABC; InitialCatalog = XYZ; Username = sa; Password = sa" This is the line of code where error is acquiring.

                      A Offline
                      A Offline
                      Abhijit Jana
                      wrote on last edited by
                      #11

                      sajjadlashari wrote:

                      Dim con As New OleDb.OleDbConnection con.ConnectionString = " DataSource = ABC; InitialCatalog = XYZ; Username = sa; Password = sa"

                      It should look like con.ConnectionString="Data Source=Database_Server_Name/IP;Initial Catalog=DataBase_Name;Integrated Security=True;User ID=UserID;Password=Password;" ;

                      cheers, Abhijit

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