How to represent class use variable

If you want to change the value of Property.Text at runtime you can try to use below

 PropertyInfo[] properties;
            int i = 0;

            foreach (Control ctrl in this.Controls)
            {
                if (ctrl is Button)
                {
                    i++;
                    properties = ctrl.GetType().GetProperties();

                    foreach (PropertyInfo property in properties)
                    {
                        if (property.Name == "Text")
                            property.SetValue(ctrl,"button" + i,null);
                    }
                }
            }

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Hope above help !

Doanh