Displaying a message after adding duplicate records in database
- by user1770370
I wrote program in C# winforms and SQL server and LINQ to SQL. I use user control instead of form. In my user control, I put 3 textbox, txtStartNumber, txtEndNumber, txtQuantity. user define value of textboxes, when clicked button, it will insert some records according to the value of txtQuantity.
I want to when duplicate number is created, it won't add to database and display message.
how do i do? I must write code in code behind or server side? i must set this in store procedure or trigger?
private void btnSave_Click(object sender, EventArgs e)
{
long from = Convert.ToInt64(txt_barcode_f.Text);
long to = Convert.ToInt64(txt_barcode_t.Text);
long quantity = Convert.ToInt64(to - from);
int card_Type_ID=Convert.ToInt32(cmb_BracodeType .SelectedValue);
long[] arrCardNum = new long[(to - from)];
arrCardNum[0]=from;
for (long i = from; i < to; i++)
{
for(int j=0; j<(to-from) ;j++)
{
arrCardNum[j]=from+j;
string r = arrCardNum[j].ToString();
sp.SaveCards(r, 2, card_Type_ID, SaveDate, 2);
}
}
}
Stored Procedure code.
ALTER PROCEDURE dbo.SaveCards
@Barcode_Num int
,@Card_Status_ID int
,@Card_Type_ID int
,@SaveDate varchar(10)
,@Save_User_ID int
AS
BEGIN
INSERT INTO [Parking].[dbo].[TBL_Cards]
([Barcode_Num]
,[Card_Status_ID]
,[Card_Type_ID]
,[Save_User_ID])
VALUES
(@Barcode_Num
,@Card_Status_ID
,@Card_Type_ID
,@Save_User_ID)
END
