Posted by jpluimers on 2018/08/21
When you run on Windows: [WayBack] Full Duplex Asynchronous Read/Write with Named Pipes – CodeProject
via:
–jeroen
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Posted by jpluimers on 2014/12/24
Once every while you still do WinForms work, and bump into something you hadn’t bumped into before.
This time it was trying to set ForeColor = Color.Red on a ReadOnly TextBox for displaying error messages:
When setting a TextBox from ReadOnly = false to true sets the BackColor from SystemColors.Window (usually white) to SystemColors.Control (usually light grey), and leaves the ForeColor to SystemColors.WindowText (usually black).
Setting ForeColor = Color.Red (funny there is a plural in SystemColors but not in Color) it doesn’t display it as such:
To my surprise, the TextBox had ReadOnly text (you could copy, but not modify it), which showed with a a grey (SystemColors.Control) BackColor and a black (SystemColors.WindowText) ForeColor: the defaults for a ReadOnly TextBox, not using my ForeColor = Color.Red;
I vaguely remembered there was some odd way of solving this, but since I hadn’t written a blog article about it back then (somewhere around .NET 1.x or 2.0 I didn’t have a blog yet), I was glad that Cheetah posted this answer on StackOverflow: Read the rest of this entry »
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Posted by jpluimers on 2014/03/24
When using a FlowLauyoutPanel, I always forget on which control the FlowBreak design time property / SetFlowBreak run time method operates.
Then I always end up writing a short demo program like Container Controls 5: FlowLayoutPanel.
It operates after the control on which you set it.
It is like text in a Word Processor: it breaks after the place where you set the break. Read the rest of this entry »
Posted in .NET, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Software Development, WinForms | Leave a Comment »
Posted by jpluimers on 2013/06/19
I hadn’t done Charting for a while, but these got going very quickly:
There are example downloads for ASP.NET and WinForms requiring .NET 4 or higher.
In addition, these starting points also proved to be really helpful:
Since my objective was adding charts to an existing WinForms business app, this was the namespace at hand: System.Windows.Forms.DataVisualization.Charting Namespace ().
If you are at .NET 3.5, then start at DataVisualization.Charting.Chart simple example – C# – Snipplr Social Snippet Repository.
–jeroen
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Posted by jpluimers on 2013/04/16
So I won’t forget to research this:
Somehow this occurs with Excel and the .NET app only having a few dozen megabytes of memory in use, so the cause must be something a lot more simple than “out of memory”.
It is a complex export, but I might just be able to get this going using ADO.NET, and make sure it is not a 60+k rows or 60+k characters issue.
–jeroen
Posted in .NET, .NET 4.0, C#, C# 4.0, Development, Excel, Office, Power User, Software Development, Visual Studio 2010, WinForms | Leave a Comment »
