How to view the error log for any specific instance?

2531

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(); } } }

2705

when i ran any workflow or session, getting below error: seesion task instance[s_xxx]: Execution terminated unexpecterdly

2297

What is live lock, deadlock and what is Lock escalation?

2495

When you get following error? Error 3154: The backup set holds a backup of a database other than the existing database.

2576

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

2782

what is the instrument that used in Mechanical Energy??

2731

What is the meaning of lock escalation and why/how to stop this?

2705

java.sql.SQLException:Invalid state, the statement object is closed Hai all i got this error when i am multiple times referesh web page

6713

NZE-28868: Peer certificate chain check failed.

2861

How to solve -805 error i.e. Bind issue. There are two conditions- 1) If you have access to the database table 2) If you don't have access to the table

2694

what is new g/l functionality

2673

IMG-02003: 2FF03 - incorrect color histogram feature specification

1760

today's peformance is less than yesturday.it took 1 mint and today's performance is 7 mints.guys can anyone answer to mu question in sql

2517

ORA-26084: direct path context already finished

1994