Question

I have a records in my table Test like this my Date column is of type varchar.

Fname      Lname      Date  
vivek      parikh     01-09-2011 10:00:00 PM  
kashyap    vyas       02-09-2011 10:50:00 AM  
viral      panchal    02-09-2011 10:00:00 PM  
Arpit      Gosai      03-09-2011 10:00:00 PM  
Darshit    Chokshi    04-09-2011 10:00:00 PM  
Sameer     Rangrez    24-08-2011 9:15:12 AM  

i want to fetch records within date range (start date and end date) from page.

my code is

 DateTime time = DateTime.Today;             // Use current time
    string format = "MM-dd-yyyy";

    SqlCommand cmd = new SqlCommand("select Fname,Lname,Insert_Date from Test where Insert_Date >= '" + Convert.ToDateTime(TextBox1.Text).ToString(format) + "' and Insert_Date <= '" + Convert.ToDateTime(TextBox2.Text).ToString(format) + "'  ", con);
    DataSet ds = new DataSet();
    SqlDataAdapter da = new SqlDataAdapter(cmd);
    da.Fill(ds);

    for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
    {
        Response.Write(ds.Tables[0].Rows[i]["Fname"].ToString());
        Response.Write(ds.Tables[0].Rows[i]["Lname"].ToString());
        Response.Write(ds.Tables[0].Rows[i]["Insert_Date"].ToString()+"<br>");
    }

Answer 1

for building your query use Convert(datetime,fieldname,103) for converting varchar to datetime.

Your query should be something like.

select * from Test
where Convert(datetime,field_date,103) >= ‘2011-01-01’ –start date

and Convert(datetime,field_date,103) <= ‘2012-01-01’; –end date

This is how your C# statement should look like (It should include 103 code to specify your date format which dd-mm-yyyy

 SqlCommand cmd = new SqlCommand("select Fname,Lname,Insert_Date from Test where Convert(datetime,Insert_Date,103) >= '" + Convert.ToDateTime(TextBox1.Text).ToString(format) + "' and Convert(datetime,Insert_Date,103) <= '" + Convert.ToDateTime(TextBox2.Text).ToString(format) + "'  ", con);