How can be avoid the Error while being Human we do mistakes???

2605

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(); } } }

2664

Hi can any one help me below two steps in sap FICO, 1.Create document number ranges for company code. 2.Copy document number ranges to fiscal year. was trying to do it but i am not able to completing successfully,

3192

ORA-26027: unique index string.string partition string initially in unusable state

6756

I am using Qt 5.6 during compilation it stops and gives error about Qmake The process "C:QtQt5.6.35.6.3msvc2015_64inqmake.exe" crashed. Error while building/deploying project untitled1 (kit: Desktop Qt 5.6.3 MSVC2015 64bit) When executing step "qmake"

1817

In .net how many error will occur?

2824

Any body can tel me how to display a Frame Link of a page in Another Frame? For Clearance of my dought..... I designed a BSP page with 3 frames as shown below. -------------------------------- | | | Frame 1 | | | -------------------------------- | Frame 2 | Frame 3 | | | | | Link 1 | | | Link 2 | | | Link 3 | | | | | -------------------------------- Now in Frame 1 i displayed one page.. And in Frame 2 i displayed one page with some links. Now when i clicked on any Link in Frame 2 that corresponding Page has to display in Frame 3. In general HTML i know...But in BSP i don't know that much since i am new to this... plz any solutions...thanks a lot.... Regards, Shankar.

2409

Hi guys, I have four tables those are emp,dept,eliminate and uneliminate. i wrote small cursor..when i run, it display one error (ORA-01403 nodata found)... The query is: Declare cursor c1 is select e.ename emp_name from emp e,dept d where e.deptno=d.deptno group by deptno; r1 c1%rowtype; test_emp varchar2(200); begin for r1 in c1 loop begin select eliminate_emp into test_emp from eliminate t,uneliminate ut where t.number=ut.number and t.deptno=e.deptno and rownum<1; end; dbms_output.put_line(r1.emp_name); end loop; end; Thanks...

2753

write a database figure to implement the master detained relationship.

2955

What is probability to guarantee that the task a programmer is going to create will be created and be able to run on a particular system (RTOS/GPOS).

2391

ORA-26028: index string.string initially in unusable state

3870

I want singal maintainer(iii& ii) solved question paper in every year in every board in rrb. If you collect these and sent these my mail-id i shall very grateful to you.

2446

who have build this website?

2283

Answers for Complete This Song B_C_A_A _IL K_A KA_E, S__AN J__E B__D_ J__E

3235

ORA-16626: failed to enable specified object

2231