C# Painting cells, rows , columns at runtime

Hi Added this peace of code, Im trying to to just click any cell ,row  or column during runtime and highlight with a color.

Instead it highlights everything instead. I think is because of the loop. let me try something else.  If you have any ideas please dont hesitate


            try
            {
                colorDialog1.ShowDialog();

                for (int i = 0; i < dataGridView2.Rows.Count; i++)
                {


                    /*if (Convert.ToUInt32(dataGridView2.Rows[i].Cells[9].Value) == 0)
                    {
                        this.dataGridView2.Rows[i].DefaultCellStyle.BackColor = Color.Red;
                    }*/
                    if (Convert.ToUInt32(dataGridView2.Rows[i].Cells[i].Value) == 0)
                    {

                        this.dataGridView2.Rows[i].DefaultCellStyle.BackColor = colorDialog1.Color;
                    }

                }
            }
            catch (System.Exception ex)
            {
                System.Windows.Forms.MessageBox.Show(ex.Message);
            }

Im trying to do something like this, is this possible can someone help me check the picture

change it to ToUInt16 instead


for (int i = 0; i < dataGridView2.Rows.Count; i++)
            {
                if (Convert.ToInt16(dataGridView2.Rows[i].Cells[0].Value) == 0)
                {
                    this.dataGridView2.Rows[i].DefaultCellStyle.BackColor = Color.Red;
                }
            }


the colors are not changing at all, i just dont understand whats going on, let me step through this code one more time.

I got this invalid data time cast to Uni32, im getting ready to just load my project,

Im using dataGridView2  not dataGridView1

see after you drag the datagrid control,you can see a small bounded arrow,click on the that ->click add column->type 
and then pick "datagridcheckboxcolumn"

where do i go to get the checkboxcolumn in the grid, i dont see the control,
 are you talking about this code you paste earlier below


 for(int i=0;i           {
                if (Convert.ToInt32(dataGridView1.Rows[i].Cells[1].Value) == 0)
                {
                    this.dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Red;
                }
                else
                {
                    this.dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Blue;
                }
           }

i asked you to have a checkbox coloumn in your datagrid,not a checkbox..now you are clarified.
just download the code which i gave and test it

I did a checkbox because you said use a checkbox, i want to be able to use the colorDialog box.

the requirements are simply to highlight any cell, row, or column during run time , and then also give the user to unhighlight everything.

 when I step through the code , it never broke in the loop at all, so thats reason why probably didnt not work

I did a checkbox because you said use a checkbox, i want to be able to use the colorDialog box.

the requirements are simply to highlight any cell, row, or column during run time , and then also give the user to unhighlight everything.

 when I step through the code , it never broke in the loop at all, so thats reason why probably didnt not work

I posted a copy of what im trying to do, when i highlight multi cells during run time

Hi it did not work when i click and highlighted multi cells, it did not change colors at all.

private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
           for(int i=0;i           {
                if (Convert.ToInt32(dataGridView1.Rows[i].Cells[0].Value) == 0)
                {
                    this.dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Red;
                }
                else
                {
                    this.dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Blue;
                }
           }      
        }

hello darnell,this is my view,listen to  the suggestions of other people also
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace gridcolor
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
for(int i=0;i {
if (Convert.ToInt32(dataGridView1.Rows[i].Cells[0].Value) == 0)
{
this.dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Red;
}
}
}
}
}
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