Problem with parameterized update query
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  1. #1
    Join Date
    Dec 2012
    Posts
    5

    Problem with parameterized update query

    I am using the following code to try and update a database entry, the UPDATE statement works when i am not using parameters but when i am using them it seems to do absolutely nothing. No error and no update either.

    PHP Code:
    sqlString "UPDATE table SET field1 = @value1, field2 = @value2, field3 = @value3 WHERE field1 = @currentValue" 
     
    dbCommand.CommandText sqlString 
    dbCommand
    .Parameters.AddWithValue("@value1"txtOne.Text
    dbCommand.Parameters.AddWithValue("@field2 "txtTwo.Text
    dbCommand.Parameters.AddWithValue("@field3 "txtThree.Text
    dbCommand.Parameters.AddWithValue("@currentValue"lstListBox.SelectedValue
    dbCommand.ExecuteNonQuery() 
    Can anyone tell me why this isnt working?

  2. #2
    Join Date
    Jun 2005
    Location
    JHB South Africa
    Posts
    3,770

    Re: Problem with parameterized update query

    you've missed matched the parameter names...

    field1 = @value1, field2 = @value2, field3 = @value3

    and then..

    dbCommand.Parameters.AddWithValue("@value1", txtOne.Text)
    dbCommand.Parameters.AddWithValue("@field2", txtTwo.Text)
    dbCommand.Parameters.AddWithValue("@field3", txtThree.Text)


    Also take the space out of the parameters name....
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  3. #3
    Join Date
    Dec 2012
    Posts
    5

    Re: Problem with parameterized update query

    Actually that was just a mistake when i was posting the code, i changed the parameter names from what i actually have in my code and accidentally put @field instead of @value. In my code they are actually correct. That wasnt the source of the problem.

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