Error: Operand type clash: int is incompatible with date

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Hi,
I am getting an annoying error while inserting into database. below is the query string. I get error on ExcecuteNOnQUery line. error is "Operand type clash: int is incompatible with date" below is the insert string.

Here User table has 4 columns. Date has date datatype and remaining are varchar(50)

sqlstring = "Insert Into User(Date,Phone_no,NameF,New_User) Values (" + Today.ToString("yy-MM-dd") + ",'" + txtPhoneno.Text + "','" + NameF.Text + "','" + N_User + "') "

Could anybody tell, what is happening wrong here.

Posted 11-Nov-12 10:07am

Xperment2008

Updated 11-Nov-12 10:08am

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MT_ · Answer 1 · 2012-11-11T18:20:00

What is today ? Is it a local variable defined? If you are trying to use DateTime then I believe it should be DateTime.Today.

Besides, this please note few points below.

Please notice that DateTime.Today will give only date part. If you need to store time as well then you should should DateTime.Now

Also, while inserting be aware of the datetime format of the sql.

And last point and the most important point: Rather than using direct inputs from the textbox, it is better to use parameterized query. As using direct textbox input in the query makes your system vulnerable to SQL Injection attack.

Hope that helps
Milind