midas - Developer IT

Temporary table resource limit

- by Jk

Hi, i have two applications (server and client), that uses TQuery connected with TClientDataSet through TDCOMConnection, and in some cases clientdataset opens about 300000 records and than application throws exception "Temporary table resource limit". Is there any workaround how to fix this? (except "do not open such huge dataset"?) update: oops i'm sorry there is 300K records, not 3 millions..

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Handling update errors in multiple records in the TClientDataset's ReconcileError method

- by Fabio Gomes

I'm trying to use the ReconcileError event to allow the user to correct the data after an update error which occurred in a specific record among others. Example: I have a dataset with one field and 3 records, this field have a unique constraint on the database, then I change one value to conflict when it reaches the database, then I call ApplyUpdates on the Dataset. This will generate an error (violation of unique constraint) in the provider and abort the applyupdates process, returning raAbort in the Action var of the ReconcileError method. In the ReconcileError method I tryied to use: Action := HandleReconcileError(aDataSet, UpdateKind, E); ** EDIT ** After debugging and dumping the DataSet records which were returned from the server, I noticed that there are 2 records in this Dataset, the first is the Old record and the second have all the changes I made to the first record. I'm a bit confused, will I always get this DataSet with 2 records? I thought that it should have only one record with the Old/New values. Thanks.

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Problem switching to a VT from X

- by Dane Midas

Hello, I have trouble switching to a VT from X I only have VT 6 defined in inittab, however once in X, ctrl + alt + F6 does not work. I see no errors of any sort, and my keymapping is correct. How would I determine the source of, and solve this problem?

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Reading MP3 files

- by Midas

I want to read MP3 files in C++ and I prefer to write my own code for this. Basically to learn how the filetype works. I want to read all the bits of hex data of a MP3 file and have my speakers play it. :) I have no idea where to start since I don't yet know how data is actually stored into a MP3 file. Thanks for your help

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Receiving data from a USB device in C or C++

- by Midas

It starts to bore me that I always have to ask questions about trifles. I simply need a list of all plugged in USB devices and have the user select one to let the console application receive any data the USB device sends. I can then start playing around with the data in my program. I don't want to use library's, only standard C++ functions, and the program should work in Windows 98.

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Delphi 2010 and Firebird - what DLL need to be included to deploy

- by John

Assuming the Firebird client is installed what additional files need to be included with a Delphi 2010 application that uses dbExpress to access the Firebird database. I assume dbxfb.dll (midas is included in the project 'uses') is required. Any others?

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Cannot use Html.ActionLink in asp.net mvc spark files

- by midas06

I'm using the spark view engine with my asp.net mvc application. In my aspx pages, I can succesfully use Html.Actionlink, but when I attempt it in spark files, it doesnt show up in intellisense, and when i try to run it anyway, i get: Dynamic view compilation failed. c:\Users\midas\Documents\Visual Studio 2008\Projects\ChurchMVC\ChurchMVC\Views\Home\Index.spark(73,25): error CS1061: 'System.Web.Mvc.HtmlHelper' does not contain a definition for 'ActionLink' and no extension method 'ActionLink' accepting a first argument of type 'System.Web.Mvc.HtmlHelper' could be found (are you missing a using directive or an assembly reference?) I do have system.web.mvc referenced, and I have added in _global.spark. None of that helps. Any ideas?

Developer IT