concatenate Rectangle control name for shape in c#

Question

This is in WinForms. and i am using microsoft.vsualbasic.powerpacks how can i concatenate Rectangle control name in c# this is what i have so far

  string n = "1";
  Rectangle match = this.Controls.Find("rectangleShape" + n,true)[0] as Rectangle;
  match.BackColor = Color.Red;

What are you targetting: Winforms, WPF, ASP..? __Always__ tag your question correctly! - Winforms: Are you trying to cast a Control to Rectangle?? That will not work. Nor do Rectangles have colors of any kind.. — TaW, Jul 23 '17 at 22:41
when i target a rectangles name directly it does have back color. — kunz, Jul 23 '17 at 22:44
Do look up [Rectangle](https://msdn.microsoft.com/en-us/library/system.drawing.rectangle(v=vs.110).aspx) — TaW, Jul 23 '17 at 22:44
Did you create a Rectangle class of your own? - Also: What is the question? Wht happens?? — TaW, Jul 23 '17 at 22:45
Well, this is info you need to add to the question and also as a tag.. — TaW, Jul 23 '17 at 22:50
Try some of the [solutions here](https://stackoverflow.com/questions/21507354/i-can-find-a-control-by-name-but-how-do-i-find-an-ovalshape-by-name)... — Idle_Mind, Jul 23 '17 at 23:01

score 0 · Answer 1 · answered Jul 24 '17 at 05:12

Try some of the solutions here... – Idle_Mind

okay will do try – droid fiji

it didnt really help :( – droid fiji

Here's a working example based on the solution I linked to in the comments. Note that the BackStyle property of your RectangleShape needs to be Opaque for you to see the color you set!

This code will set the BackColor of rectangeShape1 thru rectangeShape3 to Red:

using Microsoft.VisualBasic.PowerPacks;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string rectName;
            string rectBaseName = "rectangleShape";
            var shapeContainer = this.Controls.OfType<ShapeContainer>().FirstOrDefault();
            if (shapeContainer != null)
            {
                for (int i = 1; i <= 3; i++)
                {
                    rectName = rectBaseName + i.ToString();
                    RectangleShape match = shapeContainer.Shapes.OfType<RectangleShape>().FirstOrDefault(o => o.Name == rectName);
                    if (match != null)
                    {
                        match.BackColor = Color.Red;
                        match.BackStyle = BackStyle.Opaque;
                    }
                }
            }      
        }

    }

}

concatenate Rectangle control name for shape in c#

1 Answers1