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(); } } }

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When ever i log onto tce and i join a sever such as Or killzone i can only play for a certain amount of time before i get kicked. it says that i have been disconected from server for unknown reason. i cant seem to figure it out. i tried turning off my fire wall, but didnt work. please if you can give me any info on what to do it would help alot. Thanks.

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

6665

I am Recording the QTP Script..the Script is below VbWindow("mdiPP").VbWindow("frmPOSOLocking").ActiveX ("SSTab").VbListView("lstPO").SetItemState "272 [10-11]", micChecked. After when when Run then give error property not found.

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ORA-16627: No standby databases support the overall protection mode.

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i have created ODBC through Data sources and tests completed sucessfully. when i am Trying to connect SQL Server through ODBC (ODBC :Oracle Open Client Adapter for ODBC 2.0.2.15.0 Microsoft SQL Server 09.00.3054) unable to Connect to SQL*Plus: Release 8.0.4.0.0. it is given following error-message . Error: ORA-03121: NO interface driver connected- function not performed.

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hi, i am trying to do modular test tree in winrunner but i am getting error like "Error in the Expression list",can you please tell e what kind of error is this? thanks.

2364

invalid quantity specification negative quantity are not allowed for this item please check this item definition quantity

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quoroum of computer languages?

3391

For pH-4 calculation it is subtracted from the previous pH7 buffer value is the same procedure to be followed for calculation of remaining buffers??

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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.

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I worked with $message and $$message, Bt its not working?..

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What is the difference between return code and completion code. When i was searching in the direct for the problem, the following errors displayed. Please can any1 explain these. Completion Code => 4 Message Id => XXDR012I Short Text => XDR field overflow. Key=SER. Len=8. Completion Code => 8 Message Id => XSQF009I Short Text => Sys call open() failed.Filename=/opt/apps/cdt3/USA/outbound/CD810O.errno=17. Completion Code => 8 Message Id => XCPR010I Short Text => Open failed for copy in OPEN_DEST_DATA. Errno=17. can you explain those 3 completion codes and also with difference between return code and completion code

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[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

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I have got one job selection order from DECON ENGG(HRD), he told me to send 2000 rs of demand draff i have send the demand draff after some time a got a job selection order in banglore but he have written that u have to give 550 rs of Guidency fees in bangalore i dont understant what to do

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