How to check if data exits in a textfile and if it does it must not save the same data and show a message saying data already exists. 
Newest questions tagged delphi – Stack Overflow. Declare variables, TotalSize and TotalRead as DWORD: Note: Please backup this file before makign any changes.ġ. I had to make some modifications to the code as follows: (In the Receive procedure) Looking into SOAPHTTPTrans.pas (located in the SourceSoap folder under your Delphi 7 install), I found that the procedure Receive was calling the OnReceivingData event. Looking at the Delphi SOAP Source code, I realized that I could modify the way this event was being called, and sending real data – where Size would mean the amount that’s currently been downloaded, and Total would give you the expected total size of the download. This event gives you a Size and a Total parameter, but they’re always the same…so you can’t use it to determine the actual download status. There’s an event in the THTTPRio.HTTPWebNode, called OnReceivingData. But what if you need to use a progress bar to display data being transferred? 
In Delphi 7, you can also use the TSOAPAttachment class. If you’ve read the paper in which tells you how you can transfer binary data using SOAP. I’ve used Delphi 7 in this article, and made some code changes to the source code, so this might not work with any other version of Delphi. This paper talks about how you can show a download “progress” bar (like many download utilities do) when using SOAP to transfer data.
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