Error writing to an access 2010 database using VB2010

can create dynamic table as follow / / Create a object of Datatable DataTable dynamicTable = new DataTable(); / / DataRow DataRow dynamicRow; / / DataColumn for Name and Time DataColumn NameColumn = new DataColumn DataColumn TimeColumn = new DataColumn( "Time" , typeof ( string )); / / add Column to Datatable dynamicTable.Columns.Add(NameColumn); dynamicTable.Columns.Add(TimeColumn); / / loop for 10 item in DataTable for ( int i = 0; i < 10; i++) { dynamicRow = dynamicTable.NewRow dynamicTable.Rows[i][TimeColumn] = DateTime.Now.ToString(); } Above is simple datatable with two column and 10 rows. What do you mean can create dynamic table as follow / / Create a object of Datatable DataTable dynamicTable = new DataTable(); / / DataRow DataRow dynamicRow; / / DataColumn for Name and

Add new datarow to datatable gives error Object reference not set to a Hi i am trying to add new row in datatable by following code gives me error Object reference not set to an instance of an object code as follows. Dim row As DataRow row = datatable.NewRow() row.Item(2) = txt_rate.Text row.Item(3) = dd_stngrp 9) = dd_timecat.SelectedItem.Value row.Item(10) = dd_fctduration.SelectedItem.Value datatable.Rows.Add(row) it will produce error at 2nd line Object reference not set to an instance of an object. Please help me out Thanks. Hello, Try datatable as follows DataTable dt = new DataTable (); DataRow dr = null ; dt

DataSet DataTable DataRow foreach loop string mySQL = "SELECT subject_id, " + " message, phone_no from massMessage conn); DataSet ds = new DataSet(); adapter.Fill(ds, "phone_no , message"); DataTable tblNumbers = ds.Tables["phone_no"]; DataRow drNum = null; DataTable tblMsg = ds.Tables["message"]; DataRow drMsg = null; foreach (DataRow drNum_loopVariable in tblNumbers.Rows) { / / send msg logic or send mail dr["number"].tostring() drNum = drNum_loopVariable; InsertSMSRecord(drNum["phone_no"].ToString()); foreach (DataRow drMsg_loopVariable in tblMsg.Rows) { drMsg = drMsg_loopVariable; InsertSMSRecord(drMsg["message"].ToString()); } } Why is there error on those underlined? hi, You can not assign the row directly without defining column in datatable. So try this foreach (DataRow drNum_loopVariable in tblNumbers.Rows) { / / send

Datatable error I have this code to get DataGridView values like 10:00am-01:00pm to the datatable, Dim dt As New DataTable() Dim dr As DataRow = Nothing Dim spt As String = Carer.s Dim splitdata As Next Carer.TimeGrid.DataSource = dt But it is showing in Datatable like, TimeFrom TimeTo 10:00am-01:00pm 10:00am-01 two times separated in splitdata. To put it in the DataTable, you can do: For i As Integer = 0 To splitdata IndexOf("-")+1) Hope this helps. Thanks, Kalyan it is showing error on splitdata.split. Split is not a member of System dr("TimeFrom") = splitdata.split ("-")(0).tostring() Help me please Showing error on these two lines, dr("TimeFrom") = splitdata.Remove(splitdata.IndexOf Help for this Used this code, Dim dt As New DataTable() Dim dr As DataRow = Nothing Dim spt As String = Carer

erroe in linq DataTable dt = ds.Tables[0]; DataTable dt1 = ds1.Tables[0]; DataRow [] intersection = dt.AsEnumerable().Intersect(dt1.AsEnumerable()); grvname.DataSource = intersection; grvname.DataBind(); i am getting error Error 1 Cannot implicitly convert type 'System.Collections.Generic.IEnumerable<System Data.DataRow> ' to 'System.Data.DataRow[]'. An explicit conversion exists (are you missing a cast?) C hi, The signature of CopyToDataTable is as follows: public static DataTable CopyToDataTable<T> ( this IEnumerable<T> source ) where T : DataRow In your case, your statement dt = query2.CopyToDataTable<DataRow> is effectively saying that the source type is a DataRow

bind datarow[] in datatable in c# Hi All, Here i have a datarow collection like DataRow[] drTemp = dtSample.Select("ID = 100"); currently i binding this datarow collection in to a Table by using foreach like foreach datarow dr in drTemp) { dtTemp.importRows(dr); } My Need is . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . With add(drTemp); but it was not working and showing some error please any body help me for this task thanks in advance Muthu hi Why not iterate through your DataRow array and add (using DataRow.ImportRow, if necessary, to get a copy of the DataRow), something like: foreach (DataRow row in rowArray) { dataTable.ImportRow(row

error encountered please see hi all can anyone please help me in resolving this error? Compiler Error Message: BC30311: Value of type 'System.Data.DataTable' cannot be converted to 'System.Data DataRow'. Source Error: Line 56: Line 57: dim product as DataRow Line 58: product = cartoperation.GetProducts(ProductID) Line 59: Line 60 thanks Since the output of your GetProducts method is a DataTable, you have to define product as a DataTable as well: Dim product As DataTable product = cartoperation.GetProducts(ProductID) Sir, can you please see this

Error : Object reference not set to an instance of an object records from the gridivew which is checked using checkbox in datatable and passing that data table to a session to take when am tryng to execute the code the above mentioned error shows in the line dataRow[i] = GridView1.SelectedRow.Cells[i2].Text; Can anyone help me thz problem protected void Button2008_Click( object sender, EventArgs e) { try { / / DataTable dtMain = / / copy the schema of source table DataTable dtClone = new DataTable (); dtClone.Columns.Add( "Email_address" ); DataRow dataRow; dataRow = dtClone.NewRow(); int i2 = 1; foreach ( GridViewRow gv in GridView1