Export DataTable To CSV File - More Than 65,536 Rows
Mar 1, 2010
Exporting DataTable data to CSV file. It is working fine as expected as long as the export records are less than 65,536. When the records are more than 65,536 , only 65,536 records are shown in CSV file (remaing records are not shown). When the export is done(with more than 65,536 records), opening the file shows below message window. File is not loaded completely. When the Ok button is selected, below text displayed...
This message can appear if: You are trying to open a file that contains more than 65,536 rows or 256 columns. To fix this problem, open the source file in a text editor such as Microsoft Word. Save the source file as several smaller files that conform to this row and column limit, and then open the smaller files in Excel. If the source data cannot be opened in a text editor, try importing the data into Microsoft Access, and then exporting subsets of the data from Access to Excel. You are trying to paste tab-delimited data into an area that is too small. To fix this problem, select an area in the worksheet large enough to accommodate every delimited item.
Notes: You can not configure Excel to exceed the limit of 65,536 rows and 256 columns. By default, Excel places three worksheets in a workbook file. Each worksheet can contain 65,536 rows and 256 columns of data, and workbooks can contain more than three worksheets if your computer has enough memory to support the additional data. Solution:- Seems like here is the suggested solution. But it takes ages to export and show data. An export is done about 15mins ago, still it is doing that. Has anyone managed to find/resolve this issue?
I have one big DataTable with X rows. I want to select Y rows from it and bind them to a new ViewList. While doing it, I want to delete these rows from the DataTable (Having X - Y rows).
What is the best and fast way to do it?
I don't know if it is better to create a new DataTable to have the Y and after that bind them to a ViewList or something else?
I'm also looking for example in code how to select/delete rows from DataTable.
I have a DataTable of available time slots. I have another DataTable of reserved time slots. I need to remove from the list of available slots the ones that have been reserved. The blocks are in 15 minute increments, but one of my problems is that the reservation can be longer than 15 minutes. I've had some luck removing one or two, but not all of the required columns.
I have an asp.net website that will generate some excel files with 7-8 sheets of data.The best solution so far seems to be NPOI, this can create excel files without installing excel on the server, and has a nice API simillar to the excel interopHowever i can't find a way to dump an entire datatable in excel similar to CopyFromRecordset
I have a datatable which has an amount column & a status column.I want to sum only those rows who have status '1'. How to do this ?I am summing the column via datatable Compute method.
i have a datatable to bind the gridview in my page. now i need to have a export button in near gridview, if we click the button then the gridview values (datatable) to excel.
i want to make a datagrid with 2 columns and many rows the columns i want to have databinding with a datatable
i want the 1 row 1 column of datagrid have data from 1 row of datatable i want the 1 row 2 column of datagrid have data from 2 row of datatable i want the 2 row 1 column of datagrid have data from 3 row of datatable i want the 2 row 2 column of datagrid have data from 4 row of datatable ...... ......
i use something like this
[code]...
but i have two times the same in tha datagrid left and right
How to select top n rows from a datatable/dataview in asp.net.currently I am using the following code by passing the table and number of rows to get the records but is there a better way.
public DataTable SelectTopDataRow(DataTable dt, int count)
{ DataTable dtn = dt.Clone(); for (int i = 0; i < count; i++) { dtn.ImportRow(dt.Rows[i]); } return dtn; }
In my simple starter asp page I create a DataTable and populate it with two rows. The web site allows users to add new rows. My problem is the DataTable doesn't save the information. I've stepped through the code and the row gets added but the next time a row is added it's not there, only the original two and the newest one to get entered.
I have gotten around this, in an inelegant way, but am really curious why the new rows are being saved.
My code:
protected void Page_Load(object sender, EventArgs e) { _Default.NameList = new DataTable(); DataColumn col = new DataColumn("FirstName", typeof(string)); _Default.NameList.Columns.Add(col); col = new DataColumn("LastName", typeof(string)); _Default.NameList.Columns.Add(col); DataRow row = _Default.NameList.NewRow(); row["FirstName"] = "Jane"; row["LastName"] = "Smith"; _Default.NameList.Rows.Add(row); row = _Default.NameList.NewRow(); row["FirstName"] = "John"; row["LastName"] = "Doe"; _Default.NameList.Rows.Add(row); } protected void AddButton_Click(object sender, EventArgs e) { DataRow row = _Default.NameList.NewRow(); row["FirstName"] = this.TextBox1.Text; row["LastName"] = this.TextBox2.Text; _Default.NameList.Rows.Add(row); _Default.NameList.AcceptChanges(); // I've tried with and without this. }
I've tried saving them to GridView control but that seems like quite a bit of work. I'm new to ASP.Net but have done windows programming in C# for the last two years.
I am using Compute for summing up a datatable which has a condition. Sometimes, there are no rows inside the datatable matching my criteria so I get an exception on ComputeObject cannot be cast from DBNull to other types.Is there a way to check/filter the datatable to see if it has the desired rows, if yes only then I apply Compute.
total = Convert.ToDecimal(CompTab.Compute("SUM(Share)", "IsRep=0"));
I have as script that runs a stored procedure to fetch a comment along with it's id. There are multiple comments and I want to display them but I am having problem with display all the records. Here is my code:
Using con Using sda As New SqlDataAdapter() Try cmd.Connection = con Catch ex As Exception Response.Write("Error" & ex.Message)
[code]...
How do I make it so that the returned results will be like this:
I have added a row to a datatable and displayed this datatable by binding it to gridview.. Later if i add another row to the same table, the data table displays only the recently added row.. I need to display the previously added row along with the newly added row.. How to do this?
When i export the data table to excel 2003 i get the output in a very fast manner and when i want to use the same in excel 2007 debugging gets stopped and nothing happens.... It does not show any errror on it to. When i slowly debugged i find that in saveas() it takes longer time and it seems like execution gets stopped in this process.
Its like in new window it shows loading for more than 10 min and after some time the particular window gets closed and nothing happens can anyone tell me what can be wrong.When the same code works great when i export to 2003.
I had task in my project to export grid view rows to excel sheet I serached and I had code and I did it but this class export only current page from grid view so I want also to export all gridview rows.
Class:
using System; using System.Data; using System.Configuration; using System.IO; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls;.........
