C# Auto Resize Form to DataGridView's size

Question

I have a Form and a DataGridView. I populate the DataGridView at runtime, so I want to know how do I resize the Form dynamically according to the size of the DataGridView? Is there any sort of property or method? Or do I have to determine the size myself and update accordingly?

Answer 1

You can find the actual width by count Columns width.

Don't forget that your form may be more complex and your should count other controls.

public class YourForm : Form
{
    public YourForm()
    {
        DataGridView _dgv = new DataGridView() { Dock = DockStyle.Fill};
        Controls.Add(_dgv);
    }
    public void CorrectWindowSize()
    {
        int width = WinObjFunctions.CountGridWidth(_dgv);
        ClientSize = new Size(width, ClientSize.Height);
    }
    DataGridView _dgv;
}

public static class WinObjFunctions
{
    public static int CountGridWidth(DataGridView dgv)
    {
        int width = 0;
        foreach (DataGridViewColumn column in dgv.Columns)
            if (column.Visible == true)
                width += column.Width;
        return width += 20;
    }
}

Answer 2

int dgv_width = dataGridView1.Columns.GetColumnsWidth(DataGridViewElementStates.Visible);
int dgv_height = dataGridView1.Rows.GetRowsHeight(DataGridViewElementStates.Visible);
this.Width = dgv_width;
this.Height = dgv_height;

this.Width resizes this Form width.

Of course you've to add fixed values (for example margin, Form title heigth, ecc.). With tests i've reached the values working for me (don't ask why...):

this.Width = dgv_width + 147;
this.Height = dgv_height + 47;