How to put string as panel name in c#

Question

I have panel that visibility is false. I want when click on treeview list, that list will retrive the panel name that i stored in database. i know how to retrieve that panel name from database in string. But how to change that 'string' into panel to make able to write like this:

panelNamethatLoadFromDB.visible = true;

My Code:

DataTable dtPanelToView = MyLibrary.getResults("SELECT LEVEL1_ID, LEVEL1_PATH FROM LEVEL1_TREEVIEW WHERE LEVEL1_DESC='" + clickLink + "'");
if (dtPanelToView.Rows.Count > 0)
{
string panelToDisplay = dtPanelToView.Rows[0]["LEVEL1_PATH"].ToString();
}

So, currently this "panelToDisplay" is string that contains panel name. i want to change this panel visibilty. Example : panelToDisplay.visible = true;

Answer 1

WinForms stores the controls diplayed on a form in the Form.Controls collection.
You could loop over this collection to find your panel

 foreach(var pan in yourForm.Controls.OfType<Panel>())
 {
     if(pan.Name == panelToDisplay)
     {
        pan.Visible = true;
     }
 }

Using the IEnumerable extensions you could also avoid the explicit loop with

 var pan = yourForm.Controls.OfType<Panel>().FirstOrDefault(x => x.Name == panelToDisplay);
 if(pan != null)
     pan.Visible = true;

Keep in mind that the Controls collection of the form stores only the first level of controls. If a control contained in the Form's Controls collection is a control container then it has its Controls collection where other controls could be stored.

EDIT
As from the comment below from TaW you could also use the Controls collection with a string indexer

if(this.Controls.ContainsKey(panelToDisplay))
    this.Controls[panelToDisplay].Visible = false;