UserControl and Connection String

[DomenicoFormoso]

I created a usercontrol (mycontrol1) containing a treeview that shows the data by dbcontext.
It works fine if I use it dynamically (I create it in the form this.control.add(mycontrol1)).
But if I use mycontrol1 at design time I get the error: Connection string "xxx" could not be found in the configuration file.

here is my app.config:

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<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <connectionStrings>
        <add name="xxx" connectionString="User Id=xxx;Password=yyy;Host=server;Database=gestio;Persist Security Info=True" />
        <add name="yyy" connectionString="User Id=yyy;Password=yyy;Host=server2;Database=saol3;Persist Security Info=True" />
    </connectionStrings>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
    </startup>
</configuration>

use dot.connect for mysql ver8.12.1229.0

[DomenicoFormoso]

My problem is not related to dotConnect but it is component programming.
For the moment I have excluded the data code at designtime.

Code: Select all

 if (!DesignMode)
            {..}

where

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protected bool IsInDesignMode
{
            get
            {
                return DesignMode || LicenseManager.UsageMode == LicenseUsageMode.Designtime;
            }
}

Thanks

[Shalex]

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