How to construct new variable in C#.
I mean, to have sth like this
public void updateXXX(string endingOfVariable, int newValue)
{
this.textBox_{endingOfVariable} = newValue;
}
This is implemented in Php:
$a = 'var'; $b = 'iable';
$variable = 'var';
echo ${$a.$b};
But maybe it is possible in C#.
The problem is that - I created ~500 textBoxes in C# Windows Form, and if I want to set a value, I need to build a switch() {case:; } statment with 500's cases.
If you've assigned a name to each TextBox, you could create dictionary mapping the names to controls:
var boxes = form.Controls.OfType<TextBox>().ToDictionary(t => t.Name);
public void Update(string name, int newValue)
{
boxes[name].Text = newValue.ToString();
}
Ignoring the fact you're doing a switch statement with 500 cases, you can use the FindControl method, and cast it to a TextBox.
((TextBox)FindControl("textbox_" + endingOfVariable)).Text = newValue;
Having 500 text boxes in an Windows Form can be a problem in and of itself (too many controls can be slow).
One way to do this is to put the controls in a dictionary when you create them (hopefully you are creating them programatically), then use the dictionary key to pull out the control you need.
You need to use reflection
static void Main( string[] args )
{
Type type = typeof(MyClass);
object o = Activator.CreateInstance(type);
FieldInfo field = type.GetField("text", BindingFlags.NonPublic | BindingFlags.Instance);
field.SetValue(o, "www.domain.com");
string text = (string)field.GetValue(o);
Console.WriteLine(text);
}
from java2s
