Subclassing DevEx.TextEdit

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Subclassing DevEx.TextEdit

Author	Message
Bill Cunnien	Bill Cunnien posted 14 Years Ago Post Details Share Post
Group: Forum Members Posts: 785, Visits: 3.6K	I just tried this approach (add a constructor with an initialization method) and the control at design-time does not set the properties according to the specifications within the init method. How are you getting this thing to work? I went back to the drawing board on my control (mostly to try out some new ideas), but have gotten back to the same place that I was earlier in the week...setting these properties in a layout method or attaching them to an event (e.g. OnBindingContextChanged).
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Charles R Hankey	Charles R Hankey posted 14 Years Ago Post Details Share Post
Group: Forum Members Posts: 524, Visits: 30K	I'm going to let Greg or Trent step in on this one. Not sure if this works differently in C#. Looks pretty solid in VB. The code I posted is the entirety of the code in my dxTextEditC.vb class. When dropped on a form from the toolbox I see all the properties set by default ( including being bolded ) as if I had manually set them as dropping the SF control on. Are you subclassing the SF wrapper or the Dx control directly?
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Charles R Hankey	Charles R Hankey posted 14 Years Ago Post Details Share Post
Group: Forum Members Posts: 524, Visits: 30K	I noticed your class is defined as partial. Is there some other part to it? What happens if you just translate my code into C# and paste directly into a class.cs ?
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Charles R Hankey	Charles R Hankey posted 14 Years Ago Post Details Share Post
Group: Forum Members Posts: 524, Visits: 30K	Okay, I tested this and it works : using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Drawing; using System.Windows.Forms; namespace SFCsharpTest { public class dxTextEditC : MicroFour.StrataFrame.UI.Windows.Forms.DevEx.TextEdit { public dxTextEditC() { this.initializecomponent(); } private void initializecomponent() { this.BindingFormat = "c"; this.Properties.Appearance.Options.UseTextOptions = true; this.Properties.Appearance.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Far; this.Properties.AppearanceDisabled.BackColor = System.Drawing.Color.White; this.Properties.AppearanceDisabled.ForeColor = System.Drawing.Color.Black; this.Properties.AppearanceDisabled.Options.UseBackColor = true; this.Properties.AppearanceDisabled.Options.UseForeColor = true; this.Properties.AppearanceDisabled.Options.UseTextOptions = true; this.Properties.AppearanceDisabled.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Far; this.Properties.DisplayFormat.FormatType = DevExpress.Utils.FormatType.Numeric; this.Properties.EditFormat.FormatType = DevExpress.Utils.FormatType.Numeric; } } } I'm attaching a C# project that demonstrates it. Attachments SFCsharpTest.zip (113 views, 55.00 KB)
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Bill Cunnien	Bill Cunnien posted 14 Years Ago Post Details Share Post
Group: Forum Members Posts: 785, Visits: 3.6K	Thanks for working this out with me. Here is the code that I am using: using MicroFour.StrataFrame.Business; using System; using System.Data; using System.Drawing; namespace Aspire.SubclassedControls.DevEx { public class TextEdit : MicroFour.StrataFrame.UI.Windows.Forms.DevEx.TextEdit { public TextEdit() { InitializeControl(); } private void InitializeControl() { if ((BusinessObject != null) && (BindingField != String.Empty)) { Properties.AppearanceDisabled.BackColor = Color.FromName("Info"); Properties.AppearanceDisabled.ForeColor = Color.FromName("InfoText"); Properties.AppearanceReadOnly.BackColor = Color.FromName("Info"); Properties.AppearanceReadOnly.ForeColor = Color.FromName("InfoText"); if (((BusinessLayer)BusinessObject).FieldDbTypes[BindingField] == DbType.AnsiString) Properties.MaxLength = ((BusinessLayer)BusinessObject).FieldLengths[BindingField]; } } } } Looks quite similar to your's, eh?
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Bill Cunnien	Bill Cunnien posted 14 Years Ago Post Details Share Post
Group: Forum Members Posts: 785, Visits: 3.6K	btw, how do you get your posted code to have the indentation...I knew once how to do it. I've forgotten.
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Charles R Hankey	Charles R Hankey posted 14 Years Ago Post Details Share Post
Group: Forum Members Posts: 524, Visits: 30K	I'm calling initializecomponent and you're calling initializecontrol ? I just copied the code from my class in vs and pasted between the codesnippet ifcodes. Get it indented in VS is an IDE options thing.
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Bill Cunnien	Bill Cunnien posted 14 Years Ago Post Details Share Post
Group: Forum Members Posts: 785, Visits: 3.6K	I pulled the appearance properties out of the if-statement. That should take care of that piece of the puzzle. Silly me. As far as the copy/paste routine....yup, that is what I do. I lose all of the indentation, though. Perhaps, it a Google Chrome thing.
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Bill Cunnien	Bill Cunnien posted 14 Years Ago Post Details Share Post
Group: Forum Members Posts: 785, Visits: 3.6K	After all of the fun, I have the following functioning code. It is not much different than where I started before attempting to recreate the SF code. using MicroFour.StrataFrame.Business; using System; using System.Data; using System.Drawing; namespace Aspire.SubclassedControls.DevEx { public class TextEdit : MicroFour.StrataFrame.UI.Windows.Forms.DevEx.TextEdit { public TextEdit() { InitializeControl(); } private void InitializeControl() { Properties.AppearanceDisabled.BackColor = Color.FromName("Info"); Properties.AppearanceDisabled.ForeColor = Color.FromName("InfoText"); Properties.AppearanceReadOnly.BackColor = Color.FromName("Info"); Properties.AppearanceReadOnly.ForeColor = Color.FromName("InfoText"); } protected override void OnBindingContextChanged(EventArgs e) { base.OnBindingContextChanged(e); if ((BusinessObject != null) && (BindingField != String.Empty)) { if (((BusinessLayer)BusinessObject).FieldDbTypes[BindingField] == DbType.AnsiString) Properties.MaxLength = ((BusinessLayer)BusinessObject).FieldLengths[BindingField]; } } } }
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Ger Cannoll	Ger Cannoll posted 13 Years Ago Post Details Share Post
Group: StrataFrame Users Posts: 430, Visits: 507	I am trying to SubClass the DevEx TextEdit control and use the AutoAdjustMaxLength property thats in the SF TextBox. If this is now included as standard, could someone point me in the right direction, if not , some pointers to where the code is in the SF Source Code, or if somebody has already done it in C#, that would be very useful
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