How to Pass Null Parameter into smalldatetime Datatype

Question

0.00/5 (No votes)

See more:

Hi, All

Here i'am using same store procedure for Inser and Update, when i pass

C#

Dbcon.TerminationDate = DBNull.Value.ToString();

it will show date as 02/Sep/2014 12:00:00 AM

i want to be null in TerminationDate column in DB using to pass null value

Thanks !

My Query :

C#

con.Open();
            cmd = new SqlCommand("Insert_StaffMaster_SP", con);
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@TerminateDateD", TerminationDate);
           
            return cmd.ExecuteNonQuery();

My Store Proc:

SQL

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO
ALTER proc [dbo].[Insert_StaffMaster_SP]
(
@TerminateDateD smalldatetime
)
as
begin
if not exists(select UserIdN from StaffMaster where UserIdN=@UserIdN)
insert into StaffMaster (TerminateDateD) values (@TerminateDateD)
else
update StaffMaster set TerminateDateD=@TerminateDateD where UserIdN=@UserIdN
end

Thanks !

Posted 1-Sep-14 20:41pm

prasanna.raj

Add a Solution

Comments

MuhammadUSman1 2-Sep-14 2:52am

TerminationDate = DBNull.Value.ToString();
why you are conerting it in String?

object
you intializing and passing i think both are different.
[Dbcon.TerminationDate = DBNull.Value.ToString(); ]

and [TerminationDate]
confirm it.

4 solutions

Solution 1

What i understand is that you want to pass Null value to store procedure so use this.

C#

con.Open();
            cmd = new SqlCommand("Insert_StaffMaster_SP", con);
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@TerminateDateD", DBNull.Value);//DBNull.Value
           
            return cmd.ExecuteNonQuery();

If any Question then please let me know.

Posted 1-Sep-14 20:49pm

MuhammadUSman1

Comments

prasanna.raj 2-Sep-14 3:06am

Yes That's right but when i try to update it's also null na... when i insert that time only it will be null... when i try to update i want to store date...

Solution 2

Parameters default has to be null.

SQL

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO
ALTER proc [dbo].[Insert_StaffMaster_SP]
(
@TerminateDateD smalldatetime = NULL
)
as
begin
if not exists(select UserIdN from StaffMaster where UserIdN=@UserIdN)
insert into StaffMaster (TerminateDateD) values (@TerminateDateD)
else
update StaffMaster set TerminateDateD=@TerminateDateD where UserIdN=@UserIdN
end

Posted 1-Sep-14 20:50pm

David Lee 145

Comments

prasanna.raj 2-Sep-14 3:07am

when i try to insert it save like "01/Jan/1900 12:00:00 AM"

Solution 4

in your proc make

SQL

@TerminateDateD smalldatetime = NULL

as a default value

in your code make your variable as nullable

C#

smalldatetime? TerminationDate = null;

check for null before adding parameter

C#

if(TerminationDate != null)
cmd.Parameters.AddWithValue("@TerminateDate", TerminationDate);

Posted 1-Sep-14 20:57pm

saxenaabhi6

Updated 1-Sep-14 20:58pm

v2

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

sankarsan parida · Accepted Answer · 2014-09-01T20:53:00

Solution 3

Put directly null in instead of TerminationDate.
Check with one more parameter if you want to pass null or not

if(ForNullValue==true)
 cmd.Parameters.AddWithValue("@TerminateDateD",null );
else 
 cmd.Parameters.AddWithValue("@TerminateDateD", TerminationDate);

Posted 1-Sep-14 20:53pm

sankarsan parida