C# convert object array into datatable

Question

Hello everyone,

I failed to find a sample about how to convert an array instances of user defined types into a (C# ADO.Net) datatable -- I want to use the datatable to bind to ASP.Net data bound controls (e.g. gridview). Could anyone provide a sample or recommend me to some simple samples?

Another question is, whether it is a must to convert to datatable in order to bound to controls in ASP.Net? Could I bound to any array of user defined types?

thanks in advance,
George

Answer 1

Hi friend,


The reason is though you set the color to the brush, you don't have access to that brush outside button click event.

So change your code as follows.


        SolidBrush myBrush;//Define the varaible outside the methods.
       
        public Form1()
        {
            InitializeComponent();
            myBrush = new SolidBrush(Color.Black);//You set a default color as black.
           
            pictureBox1.Paint += new PaintEventHandler(f1_paint);//Your picture box paint method

            //You can write your other code here, if you want.
        }

        private void f1_paint(object sender, PaintEventArgs e)
        {
            System.Drawing.Graphics formGraphics = this.CreateGraphics();
            formGraphics.FillEllipse(myBrush, 20, 20, 40, 40);
            //You can write other drawing code as you like.
            //But use 'myBrush ' to draw.
            
        }


        private void button2_Click(object sender, EventArgs e)
        {          

            ColorDialog clrdlg = new ColorDialog();

            if (clrdlg.ShowDialog() == DialogResult.OK)
            {

                myBrush = new SolidBrush(clrdlg.Color);
                pictureBox1.Refresh();
            }
        }





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Answer 2

Friend what are you doin with that PictureBox because after changing... the color of Brush you need to DrawSomthing with that brush ...then you can see color changed or not .

Answer 3

Hi Kirtan

Thaks very much for replying to my question with the code.  I added this code but unfortunately it didn't work. when I click on the button, the color dialog window opens, i select a new color for the brush, paint on the grid again but the color has not changed.  I also tried this code, but it didnt work.

 private void button2_Click(object sender, EventArgs e)
        {

            SolidBrush myBrush;

            ColorDialog clrdlg = new ColorDialog();

            if (clrdlg.ShowDialog() == DialogResult.OK)
            {

                myBrush = new SolidBrush(clrdlg.Color);

            }
        }

I used myBrush as this is what I am using earlier in the code as my brush object. I also tried this code but it didn't work.

 private void button2_Click(object sender, EventArgs e)
        {

            SolidBrush myBrush;

            ColorDialog clrdlg = new ColorDialog();

            if (clrdlg.ShowDialog() == DialogResult.OK)
            {

                myBrush = new SolidBrush(clrdlg.Color);
                pictureBox1.Refresh();

            }
        }

Do you know why this isn't working?  Do you have any suggestions on how I can resolve this issue?  Thanks for your time.

Kind regards

Answer 4

Friend , Here is Code you need .!!

 private void button1_Click(object sender, EventArgs e)

        {

            SolidBrush brush;

            ColorDialog clrdlg = new ColorDialog();

            if (clrdlg.ShowDialog() == DialogResult.OK)

            {

                brush = new SolidBrush(clrdlg.Color);

            }

 

            //Now use the Brush where you need

 

            // Thats it

 

        }