C1 Community

My application is starting up very slowly. Using a perfomance profiler, I've finally narrowed down the problem.

I have a form with a C1DockingTab. The tab contains numerous data bound fields, bound to a few different BindingSource(s). Each BindingSource is bound to either a C1DataSet/DataTable or a DataSet/Table.

With the profiler I noted that a lot of time was spent in the designer code for InitializeComponent in the Controls.Add(the tab).

After trying different things, I pulled all the databinding out of the designer code into a separate sub called after InitializeComponent.

I finally found that the first simple databinding line i.e. <control>.DataBindings.Add(...) for the tab is 20 seconds! I shifted databinding order around and found it is always the first, thus independent of BindingSource. I also found that a System.TabControl does not have this problem.

Has anyone else seen this?

I'd really like to use the C1DockingTab but not at this cost.

I am currently using version 2.0.20072.19209

<TDukek> wrote in message news:204749@10.0.1.98...

My application is starting up very slowly. Using a perfomance profiler, I've finally narrowed down the problem.

I have a form with a C1DockingTab. The tab contains numerous data bound fields, bound to a few different BindingSource(s). Each BindingSource is bound to either a C1DataSet/DataTable or a DataSet/Table.

With the profiler I noted that a lot of time was spent in the designer code for InitializeComponent in the Controls.Add(the tab).

After trying different things, I pulled all the databinding out of the designer code into a separate sub called after InitializeComponent.

I finally found that the first simple databinding line i.e. <control>.DataBindings.Add(...) for the tab is 20 seconds! I shifted databinding order around and found it is always the first, thus independent of BindingSource. I also found that a System.TabControl does not have this problem.

Has anyone else seen this?

I'd really like to use the C1DockingTab but not at this cost.

I am currently using version 2.0.20072.19209

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http://helpcentral.componentone.com/cs/forums/p/75213/204749.aspx#204749

The latest build made no difference. 

I narrowed down the problem. It somehow is caused by the existence of a C1DataSet that I use for designing the form which I was able to find once I stripped down the application. (I would attach the application but your 'Attach' is not working)

In my BindToDataSet subroutine, if I dispose of this C1DataSet before I begin adding the DataBindings, I don't have the problem.

Interestingly enough, in my stripped down application, I'm not even binding to a C1DataSet but am using a DataSet so I really don't understand the conflict. Again, it is only the 1st databinding I do for a control that resides on the C1DockingTab that results in a 20+ second delay.

R/

Teresa