public class MyTextBox : TextBox
{
    private string m_MyProperty;

    public MyTextBox
    {
        this.m_MyProperty = "";
        
        // As an additional bonus, I'm showing you two ways to do color
        this.BackColor = System.Drawing.Color.FromArgb(90, 100, 240);
        this.ForeColor = System.Drawing.Color.Firebrick; ;
    }

    [DefaultValue("")]
    public string MyProperty
    {
        get {return this.m_MyProperty;}
        set {this.m_MyProperty = value;}
    }
    [DefaultValue(typeof(System.Drawing.Color), "90,100,240")]
    public override System.Drawing.Color BackColor
    {
        get
        {
            return base.BackColor;
        }
        set
        {
            base.BackColor = value;
        }
    }
    [DefaultValue(typeof(System.Drawing.Color), "Firebrick")]
    public override System.Drawing.Color ForeColor
    {
        get
        {
            return base.ForeColor;
        }
        set
        {
            base.ForeColor = value;
        }
    }
}

Also, some properties aren't virtual and can't be overridden. For those properties, you can use "new" instead of "override".

from a solution provided by Bonnie Berent in Messages #1196770 and #1197504

DataRow[] rows;

// To copy all the rows
rows = MyOldTable.Select();
MyDataSet.Merge(rows);

// To copy a subset
string FilterSubset = "code = '4'";
rows = MyOldTable.Select(FilterSubset);
MyDataSet.Merge(rows);

But, if you're using Visual Studio 2005 ... then no worries mate! There's the new .ToTable() method to the rescue!

DataTable dtCopy = MyOriginalTable.DefaultView.ToTable();
MyNewTable.Merge(dtCopy);

from a solution provided by Mike Cole in Message #1178569

html src:

<asp:CheckBoxList ID="cblUsers" runat="server" >
  <asp:ListItem>Item 1</asp:ListItem><asp:ListItem>Item 2</asp:ListItem>
  <asp:ListItem>Item 3</asp:ListItem><asp:ListItem>Item 4</asp:ListItem>
</asp:CheckBoxList>

        With cblUsers
            For x = 0 To .Items.Count - 1
                If .Items(x).Selected Then
                    Response.Write(.Items(x).Text & "<BR>")
                End If
            Next
        End With

cblUsers.AppendDataBoundItems = true

from a solution provided by Perry Forman in Message #1128475

Handlers for this event receive an argument of the DataGridViewCellFormattingEventArgs type. This object contains properties that let you determine the value of the cell being formatted along with its location in the DataGridView control. This object also contains a CellStyle property that is initialized to the value of the InheritedStyle property of the cell being formatted. You can modify the cell style properties to specify style information appropriate to the cell value and location.

As always, to paraphrase a common phrase, "a code snippet is worth a thousand words":

private void MyDataGridView_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
    if (e.RowIndex == 1)
    {
        e.CellStyle.BackColor = Color.Green;
    }
}

from a solution provided by Alexandre Palma in Message #1166923