A sample program using data structure? what is file handling?

3388

write the value of x and y after execution of the statements: int x=19,y; y=x++ + ++x; x++; y++;

1943

What is SCD (Slowly Changing Dimensions)? What are its types?

2680

I have written the code as below. here problem is that dt remain null. how to solve thst please tell me. public partial class Form1 : Form { private DataTable DTable; private DataRow drow; public Form1() { InitializeComponent(); } private OleDbConnection getConnection() { OleDbConnection con=new OleDbConnection (@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Documents and Settings\Administrator\My Documents\Visual Studio 2008\Projects\winApp for Student\winApp for Student\App_Data\SchooMgnSystem.mdb;Persist Security Info=True"); return con; } private void button1_Click(object sender, EventArgs e) { InsertData(); } private void InsertData() { if (DTable==null) { DTable = new DataTable(); DTable.Columns.Add("StudID", typeof(string)); DTable.Columns.Add("StudName", typeof (string)); DTable.Columns.Add("Address", typeof(string)); drow = DTable.NewRow(); drow[0] = txtStudID.Text; drow[1] = txtSTudName.Text; drow[2] = txtAddress.Text; DTable.Rows.Add(drow); grdStudent.DataSource = DTable; } else { drow = DTable.NewRow(); drow[0] = txtStudID.Text; drow[1] = txtSTudName.Text; drow[2] = txtAddress.Text; DTable.Rows.Add(drow); grdStudent.DataSource = DTable; } } private void button2_Click(object sender, EventArgs e) { string cmdstr; OleDbCommand cmd; OleDbConnection con = getConnection(); foreach (DataRow Drow in DTable.Rows) { cmdstr = "Insert into Student values('" + drow[0].ToString() + "','" + drow[1].ToString() + "','"+drow [2].ToString()+"')"; cmd = new OleDbCommand(cmdstr,con); try { con.Open(); cmd.ExecuteNonQuery(); } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { con.Close(); } } }

2660

Write down the difference between c. Loop and goto statement d. (!0) and (!1) e. (1= =! 1) and (1!=1) f. NULL and !NULL

3829

what is the instrument that used in Mechanical Energy??

2693

When I look for mannual enry of any of the command in Unix, such as #man ls, I get a message "Reformatting entry. Wait..." and control comes to a next command prompt. what is the problem?

2476

i have SAP B1 in my work area When i am try to hold the particular item the following ERRORS display in my System (This entry already exists in the following tables '' (AIT1) (ODBC -2035) [Message 131-183])

5177

can a merchant exporter adjust or claim refund of input service tax ??

2294

I entered the data in SQL toad version 9.0.1 in English and Arabic language but when i do the query i get the data in Arabic language with (??? question mark) ,please your support.

1667

What is Mutex error in Triggers?

3081

mount: mount to NFS server failed: System Error: Connection timed out

3677

[ERROR] [main 11:01:20] (JCLLoggerAdapter.java:error:454) Unsuccessful: alter table user.CEN_USER_MASTER add constraint FKF4EDEDC3D0BAAE75 foreign key (ROLE_ID) references user.CEN_ROLE_MASTER [ERROR] [main 11:01:20] (JCLLoggerAdapter.java:error:454) ORA-02275: such a referential constraint already exists in the table

2737

IMP-00063: Warning: Skipping table "string"."string" because object type "string"."string" cannot be created or has different identifier

2746

IMP-00096: Warning: Skipping table "string"."string" because type synonym "string"."string" cannot be created

1628