Search for controls by control name reflection, control name reflection

Search for controls by control name reflection, control name reflection

Because the understanding of. net is not too deep, we can only make the following level:

Find the desired Reflection Property Information:

PropertyInfo ^ getPropertyInfo (Type ^ t, String ^ pName ){
PropertyInfo ^ pInfo;
While (t! = Nullptr ){
PInfo = t-> GetProperty (pName, BindingFlags: DeclaredOnly | BindingFlags: Public | BindingFlags: Instance );
If (pInfo! = Nullptr)
{
Return pInfo;
}
T = t-> BaseType;
}
Return nullptr;
}

Search from a Component, and then check whether its sub-Component is a control named compName. If yes, return nullptr. If no, return nullptr.

// Get a component by it's name, the component is in comp
Component ^ getComponentByName (String ^ compName, Component ^ comp ){
If (nullptr = comp)
{
Return comp;
}

// If this component is the right one, then return it
Type ^ t = comp-> GetType ();
PropertyInfo ^ pInfo = t-> GetProperty ("Name ");
If (pInfo! = Nullptr & compName-> Equals (dynamic_cast <String ^> (pInfo-> GetValue (comp, nullptr ))))
{
Return comp;
}

// Search this component's children Controls
Component ^ retComp;
PInfo = getPropertyInfo (t, "Controls ");
If (pInfo! = Nullptr)
{
System: Collections: IList ^ list = safe_cast <System: Collections: IList ^> (pInfo-> GetValue (comp, nullptr ));
If (list! = Nullptr)
{
For (int I = 0; I <list-> Count; I ++)
{
If (nullptr! = (RetComp = getComponentByName (compName, safe_cast <Component ^> (list [I])
{
Return retComp;
}
}
}
}

// Search this component's children Items
PInfo = getPropertyInfo (t, "Items ");
If (pInfo! = Nullptr)
{
System: Collections: IList ^ list = safe_cast <System: Collections: IList ^> (pInfo-> GetValue (comp, nullptr ));
If (list! = Nullptr)
{
For (int I = 0; I <list-> Count; I ++)
{
If (nullptr! = (RetComp = getComponentByName (compName, safe_cast <Component ^> (list [I])
{
Return retComp;
}
}
}
}

Return nullptr;
}

 

In VS2008, how does one find existing controls in the form based on the control name?

There seems to be a drop-down text box on the property Panel, where you can select it!

In VB6, how can I find controls by control name?

Honestly, there are better ways to implement your functions...
1. Use the control array.
2. Use a collection object.
Both methods can implement your functions.
The control array is very convenient, just like the array.
Set is better. Add a TextBox-type control to it as an element.