check two dates between two dates

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SQL-server-2000

SQL-Server-2005

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Hi is there any code to find appointment availability.
i want to compare two dates that come from database and two other date that user input from textbox.
User insert two date, start_date and end_date from asp.net textbox if between those 2 data any data were find in database it show message "slot allready book" else "booking successful".
Help me
thanks in advance

this is my table definition

<img src="http://s12.postimg.org/5gb83qfnx/database_design.png"></img>

I have inserted some data
<img src="http://s10.postimg.org/423vmgjqh/tabledata.png"></img>

And this is my asp.net page design
<img src="http://s11.postimg.org/opkagl54z/form.png"></img>

i use this code but not work properly

C#

protected void Button1_Click(object sender, EventArgs e)
{
    SqlConnection con = new SqlConnection(str);
    con.Open();
    SqlCommand cmd_read = new SqlCommand("select start__date,end__date from meeting", con);
    SqlDataReader dr = cmd_read.ExecuteReader();
    while (dr.Read())
    {
        start =Convert.ToDateTime( dr[0].ToString());
        end = Convert.ToDateTime(dr[1].ToString());

        DateTime str1 = DateTime.Parse(TextBox2.Text);
        DateTime str2 = DateTime.Parse(TextBox3.Text);
        if((str1 > start && str1 < end) || (str2 > start && str2 < end))
        {
    Label5.Text = "Already Booked";
    break;
        }
        else{
            Label5.Text = "Available";
            break;
        }
    }

    con.Close();
}

Help me soon...

Posted 22-May-13 19:05pm

ANJYR

Updated 22-May-13 19:11pm

v2

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Arun Vasu · Answer 1 · 2013-05-22T19:20:00

you can solve it by stored procedure.

SQL

CREATE PROCEDURE CHECKMEETINGDATE
(
    @TXTDATE1   NVARCHAR(10)
    , @TXTDATE2 NVARCHAR(10)
)
AS
BEGIN
    SET NOCOUNT ON
        IF(SELECT TOP 1 1 FROM Meeting WHERE @TXTDATE1 BETWEEN start_date AND end_date)
        BEGIN
            SELECT 'Already Booked'
        END
        ELSE IF (SELECT TOP 1 1 FROM Meeting WHERE @TXTDATE2 BETWEEN start_date AND end_date)
        BEGIN
        END
            SELECT 'Already Booked'
        ELSE
        BEGIN
            SELECT 'Available'
        END
    SET NOCOUNT OFF
END