how to get auto increment like 00000,00001,00002..in asp.net

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C#

hi, friend i have one table in that i would like add id like 00001,00002,00003..etc..how to get max value from database and how write code for increment ...? please help me...

my code is :

C#

sqlcon.Open();

     string strgvid = "select max(udid) from tbl_apply";
     SqlCommand cmdgvid = new SqlCommand(strgvid, sqlcon);
     int uid = Convert.ToInt32(cmdgvid.ExecuteScalar());
     lbl_uid.Text = Convert.ToString(uid);
     sqlcon.Close();

Posted 25-Dec-15 23:24pm

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OriginalGriff · Answer 1 · 2015-12-25T23:38:00

Solution 2

Instead of using Convert.ToString, just use ToString with a format indicator:

C#

lbl_uid.Text = uid.ToString("D5");

Posted 25-Dec-15 23:38pm

OriginalGriff

aarif moh shaikh · Answer 2 · 2015-12-25T23:35:00

Use below Query.

SQL

CREATE TABLE [dbo].[EmployeeMaster](
  [ID] [int] IDENTITY(1,1) NOT NULL,
  [PreFix] [varchar](50) NOT NULL,
  [EmployeeNo]  AS ([PreFix]+ RIGHT('00000' + CAST(Id AS VARCHAR(7)), 7)) PERSISTED,
  [EmployeeName] VARCHAR(50)
)

for more details please follow below link.
C# Corner : Error Display[^]

Regards,
AARIF SHAIKH