Reading CSV File Rows And Columns
Jan 13, 2010I have a CSV file (with semicolon field separator) of 150MB (about 2 milion rows and 35 columns).
Now I want to loop through the CSV per row and get each row column.
I have a CSV file (with semicolon field separator) of 150MB (about 2 milion rows and 35 columns).
Now I want to loop through the CSV per row and get each row column.
I'm binding a gridview from a webservice with 30 columns and 10 rows, I need to print the same in a PORTRAIT, for that i decided to display columns as rows and
rows as columns like below:
EMP1 1 2 3 4
EMP2 1 2 3 4
im using sqlbulkcopy to import all the columns and rows in an excel file to a database. My question is, if my database has 1 more extra column which i have to map it to a session variable and that extra column in the database is not found in the excel, isit possible to do something like dat?
View 3 RepliesI am using matrix control in RDLC file. I am unable to set the grid lines property.
how to set this property and where it is?
I created a gridview that is made up of 4 gridviews and using a stored procedure to populate it. I create columns at runtime because the number of columns changes all the time.To make the grids editable I am adding template fields at runtime as I create the columns, this is to ensure that a user is able to edit the cells and some foot values update. Reason why I have four grids is to freeze rows and columns like in excel using javascript. The problem is that performance is very bad especially in IE, the grids take a long time to load. I am not sure if this is caused by the data load or the creation of text boxes. see some of the code below for my _aspx page:
[Code]....
I know this is probably a pretty easy thing to do and it is if I can upload the file and store it onto the hard drive of the server. What I need to do is read the text file into memory and then parse through it one line at a time. Anyone have any code that demonstrates that?
View 8 RepliesI'm trying to read a CSV file into a DataTable using OleDbConnection and OleDbDataAdapter. It works loading the DataTable, but only does 255 columns. The file has 362 columns.
Code is as follows -
[Code]....
I have a schema.ini too -
[Code]....
I would like ask you for some ideas how can I write mechanism that will be automatically read files from folder. I don't know how to schedule the write task. I want to check for new file everyday and if the new file is in the folder read it.
View 2 RepliesI was trying to go through this tutorial:
[URL]
but when I tried to add the service reference to the silverlight app, the Add Service Reference window would show me that there was a service file, but the node wouldn't expand to show the rest of the files that contain the services and what not. I got this error instead:
"An error occurred during the processing of a configuration file required to service this request. review the specific error details below and modify your configuration file appropriately."
"Parser Error Message:There is no service behavior named 'AdventureWorks_WebServer.Service1Behavior'."
"Metadata contains a reference that cannot be resolved: 'http://localhost:55579/Service1.svc'.
The server did not provide a meaningful reply; this might be caused by a contract mismatch, a premature session shutdown or an internal server error.
If the service is defined in the current solution, try building the solution and adding the service reference again."
here's my web.config file:
[Code]....
i like to create a web application,in that i need to get the resumes from the user,then i need to publish that resume to the manager in date wise..
View 5 RepliesIn web service reading *.txt file .this file contains some special characters like "" .so its shows error while reading .
string fullPath = Server.MapPath("sample.txt");
string reconciliationData = string.Empty;
StreamReader ObjReconciliationDataStream = new StreamReader(fullPath, Encoding.UTF8);
string strReconData = ObjReconciliationDataStream.ReadToEnd();
ObjReconciliationDataStream.Close();
ObjReconciliationDataStream = null;
return strReconData;
above code i am using .
I am looking to 'hypothetically' post nine rows of data with column headers for 15 different columns. That would be too many textboxes. All the data is directly calculated in VB.net. I want to insert some sort of spreadsheet-type deal with the tool "Table" or something I heard about "Gridview?".
View 2 Repliesi 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
This is how my table in db looks like
Remarks Id Remark
1 Rem1_aaa
2 Rem1_ccc
1 Rem1_bbb
2 Rem1_ddd
i want the output as:
Id Column1 Column2
1 Rem1_aaa Rem1_bbb
2 Rem2_ccc Rem2_ddd
I have a table think as table1, with 3 columns
col1 col2 col3 -- Columns
Y N 1 -- Data
but i want
colname val
col1 Y
col2 N
col3 1
how i will set No Of Rows & Columns for textbox in Mobile web controls.
View 2 RepliesI want to add rows and columns to grid dynamically. plz give me right code for it.
View 1 RepliesI would like to find a way to read a txt file (in my case delimited by €). I need to change the order of the columns and also add and remove some columns. My output file should be a txt file delmited by ;.
I tried Jet.OLEDB to read the file and put it into a datatable and then used a stringBuilder and streamwriter to get an output file in .txt format. However. This does not me since IŽ, reading the txt file from start to end and my output will be the same. It does not seem like I can have a custom sql statement when reading the file. The only query that works is
Dim da As New System.Data.OleDb.OleDbDataAdapter("Select * from 1.txt", TextConn)
How can I possible modify a txt file?
This is my code for now:
[Code]....
This is datat table format :
TagName Timestamp Value
Tag1 21-2-2011 12
Tag1 22-2-2011 1
Tag2 21-2-2011 13
I want in this Format
TimeStamp Tag1 Tag2
21-2-2011 12 13
22-2-2011 1 0
Given a GridView control defined like this:
[code]....
The "FilePath" and "AttachmentID" fields are being set correctly in the grid, however, the CheckBox control is never set correctly; it is always unchecked.
My question:
How do I get this CheckBox field set from C# as I'm creating the new row?
P.S. I am not sure if I am creating the row correctly in the first place.
I am trying to set the top gridview's column's width to the body's column width and then the left columns height to the body's coloumns height. Here is my code:
<form id="form1" runat="server">
<div>
<asp:Table ID="Table1" runat="server">
<asp:TableRow>
[Code]....
I have a table like this..
---------------------------------------------------
ItemID ItemName Qty CenterID
---------------------------------------------------
1 X 10 52
1 X 6 53
1 X 4 57
2 y 6 58
I SHOULD convert the abouve table like this..
ItemID ItemName Qty CenterA centerB CenterC CenterD
---------------------------------------------------
1 X 20 10 6 4 0
2 Y 6 0 0 0 6
I've got a grid view on my form that is bound to a data table at run tim. The data table is returned by a function rather than direct from the DB so I can't set the datasource at runtime.
I bind the grid in the page_load event like this:-
Code:
Dim _dt As System.Data.DataTable
_dt = _srvc.GetVinylShutters(0)
_dt.Rows.Add(_dt.NewRow)
grdShutters.DataSource = _dt
grdShutters.DataBind()
(_dt.Rows.Add(_dt.NewRow) is just there to add a blank row in, otherwise I wasn't seeing any columns at all)
I've then got the following snippet which I want to use to hide some underlying columns:-
Code:
For Each col As DataControlField In grdShutters.Columns
Select Case col.HeaderText
Case "OrderID", _
"ShutterID", _
"ModelID", _
[Code] ...
The thing is, wherever I put this it doesn't seem to hide the columns. If I break into the code I can see that grdShutters.Columns.Count equals zero althought I can see that the bound datatable has 38 columns.
I've tried the Page's Load, LoadComplete and PreRenderComplete events as well as the gridview's DataBound, RowDataBound and RowCreated events. I get teh same result in all of them. The grid doesn't actually have any columns until it appears on the screen.
I am trying to set come columns to invisible after all of the rows are binded but I'm having trouble. I'm hiding columns that have empty data which I save in a session variable. This works fine. Then I tried changing the columns visible property using the ColumnByName routine in the DataBound but that must be the wrong event because I do not think the columns exist yet.
The columns are autogenerated btw.
Where can I set the columns properties after it has binded? Can i do this before the columns are autogenerated the the screen itself?
Table1
t1c1 t1c2 t1c3
1 1 jim
2 2 ruth
3 4 paul
4 8 sam
5 16 NA
Table2 ( Need this)
t2c1 t2c2 t2c3 t2c4 t2c5
10 1 1 jim 2010-02-03
10 2 1 ruth 2010-02-03
10 4 1 paul 2010-02-03
10 8 1 sam 2010-02-03
The tricky part I have to perform is to copy rows( only t1c2 -> t2c2, t1c3->t2c4 columns) untill I see NA(Not applicable string) in t1c3 to Table2 putting (10 in t2c1, 1 in t2c3, current date in t2c5 columns for all rows).