Comments by Member 8697827 (Top 31 by date)

Thank you very much for your reply
I tried tthis solution but still the same error

I also tried da.Fill(da) but the same message appear
so I remove this line the form appear But at button new to add new to the database it brings this message nullReferenceException was unhandled object reference not set to an instance of an object

Imports System.Data
Imports System.Data.SqlClient
Public Class Form1
Dim cn As SqlConnection
Dim ds As DataSet
Dim da As SqlDataAdapter
Dim r As DataRow
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim strconnection As String = "data source=.\SqlExpress;initial catalog=master;integrated security=true"
cn = New SqlConnection(strconnection)
cn.Open()
Try
cn.ChangeDatabase("dd_db")
Catch ex As Exception
Try
Dim command As New SqlClient.SqlCommand("create database dd_db", cn)
command.ExecuteNonQuery()
command.Connection.ChangeDatabase("dd_db")
Dim command1 As New SqlClient.SqlCommand("create table dd_tb ([admi.num][int](10),[tran.num][int](4),[name][char](40),[age.reci][int](2),[sex.reci][char](8),[or.kid.d][char](22),[specify][char](50),[consang][char](20),[rec.b.g][char](8),[r_iggt][char](8),[r_iggr][char](12),[r_igmt][char](8),[r_igmr][char](12),[r_hcvt][char](8),[r_hcvr][char](12),[r_pcrt][char](8),[r_pcrr][char](12),[r_hbvt][char](8),[r_hbvr][char](12),[r_bpcrt][char](8),[r_bpcrr][char](12),[blood.gp][char](10),[rhla_aa][int](8),[rhla_ab][int](8),[rhla_ba][int](8),[rhla_bb][int](8),[rdr_a][int](8),[rdr_b][int](8),[prior.bl][char](8),[type.blo][char](15),[number.o][char](15),[num.bl.t][int](2),[datel.bl][date](10),[erythrop][char](8),[hypr_pre][char](8),[rec_schi][char](8),dia_rec][char](22),[sit_urn][char](12),[dial_pre][char](8),[dia_typ][char](20))", cn)
command1.ExecuteNonQuery()
Catch ex1 As Exception
MsgBox(ex.Message)
End Try
End Try
da = New SqlDataAdapter("select * from dd_tb", cn)
Dim x As New SqlCommandBuilder(da)
ds = New DataSet()
da.Fill(ds, "dd_tb")
End Sub
End Class

This is the code at the line of da.Fill(ds, "dd_tb") after compile it brings this message sqlException was unhandled invalid object name "unc_dd" I tried unc_dd.dbo.unc_dd but it brings the same message
So can you help me to find the solution
Thanks in advance
Dalia

I tried it but the same message appear

I have fixed the code
import java.util.Scanner;
public class person {
String name,address,job;
byte age;
person(String name,byte age,String address,String job)
{this.name=name;
this.age=age;
this.address=address;
this.job=job;
}
public void display()
{System.out.println("name= "+name);
System.out.println("age= "+age);
System.out.println("address= "+getAddress());
System.out.println("job= "+job);
}
void setAddress()
{String add=address;
}
String getAddress()
{return address;
}

public static void main(String[] args) {
Scanner input=new Scanner (System.in);
System.out.print("name is");
String s=input.next();
System.out.print("age is");
Byte x=input.nextByte();
System.out.print("address is");
s=input.next();
System.out.print("job is");
s=input.next();
person p = new person(s,x,s,s);
p.display();

}
}
can you say your comment

can you please explain the setAddress() and getAddress()

thanks alot

Thank you very much for your help
I do it and it works

The error occurs at this line
person p = new person();

yes I am reading in distributed system and I don't understand the fork and I haven't the compiler I try to download but don't find can you help me in understanding the fork

no the program not the code

ok could you put the link of the program because I don't have it

I have read on google first but I cannot solve this problem
How may processes will be created when the following program is executed? Assume that all fork system calls are successful. what will be printed?
main()
{
int i=1;
int ret_val=0;
while(i{=5)
{
fork();
if(ret_val==0) /*child code*/
{printf("In child%d.\n",i);
exit(0);
}
else{/*parent code*/
i=i+1;
}}}

these are variables so I can put another name

please edx,_asm,std stands for what

so I see google search but this is the assembly of mano I want to calculate the working registers by c++

thank you

I mean mano computer architecture

thank you

Thank you very much for your help but I have a question is itt suites mano computer architecture.

thank you

thank you

yes you are right only child class will get inherited from the parent class
but I want to know overriding
So thank you

of course thank you vey much for your help but how to write the code i want to load and store registers in memory but how to write the code in c++?

yes I mean the cpu registers ex DR AC PC AR IR TR
you say that you did it so can you show me how