OleDbDataReader From Excel Gives Blank Line
Apr 8, 2010
I am creating an application which uses OleDb to connect to an Excel spreadsheet and read the data into DataTable. The problem that I am having is that some of the columns I am getting are coming up blank, I've managed to narrow down that this is because that the first few lines for that column are blank. As unfortunately this is valid in the context of the Excel spreadsheet as not all dates etc. are required to be filled in. I was wondering whether anyone knows of any way that I could go about ensuring that the columns are populated by the OleDbDataReader even if the first x number of rows have that column as blank.
View 2 Replies
ADVERTISEMENT
Feb 25, 2009
I have a ListBox that I add items to using the standard:
ListBox1.Items.Add(whatever)
I would like to increase the space between entries, but not adding a blank line, since I do not want a blank option tha thwe user could click on. Is there anyway to do this?
I have tried:
ListBox1.Items.Add(whatever & vbCrLf), but no change.
View 4 Replies
Jun 12, 2012
I have a string which contains many rows of data which has been converted from a datatable. The last row of my string has nothing within it, no spaces or anything. How can I get rid of this row? I have tried regex, but cant seem to get anything that does the job. I am writing in VB.[code]...
View 2 Replies
Jan 4, 2012
I have a text file that has multiple blank lines and Im trying to return all the lines between two of them specifically
so if I have a file that looks like this:
[Code].....
I would like to grab lines 8-13. Unfortunately, it might not always be 8-13 as it could be 9-20 or 7-8, but it will however always be between the 2nd and 3rd line break.
I know how to trim characters and pull out singular lines, but I have no idea how to trim entire sections.
View 2 Replies
Jan 12, 2011
first why do I have a extra blank line between 2 lines of text
I have a mainform from which I display a second form with a few comboxes
[Code]...
View 2 Replies
Dec 28, 2010
How can I ignore a blank line in between the data in a text file using VB.NET? For example, I have a file with data like this
Line 1: 020220date20101231salesvalue52..
Line 2: 356465date20101231salesvalue52..
Line 3: Blank Line
Line 4: **strong text**
Line 5: 356465date20101231salesvalue52..
Line 6: 356465date20101231salesvalue52..
Line 7: Blank Line
Line 8: 356465date20101231salesvalue52..
Line 9: 356465date20101231salesvalue52..
continues...
View 3 Replies
Nov 23, 2010
I have a comma deliminated text file which i am using to generate a multidimensional array using the following [code]...
View 1 Replies
May 4, 2011
Basically I've got a list of items in a text file, but sometimes a blank line gets inadvertently put in there, and I need to be able to delete that line (or change that line to a set value, either is fine).
View 5 Replies
Oct 15, 2009
I'm using a Do Loop to do calculations and display them in a textbox. how I can remove the last blank line at the very end of the displayed values?
I know that it's caused byControlchars.Newline, but I need it to display the calculations line after line.[code...]
View 3 Replies
Mar 2, 2009
I have a text box with the following text:
[colour=blue]Summary: [/color]
Testing summary
How can I use vb.net to parse this to:
[colour=blue]Summary: [/color]Testing summary
View 2 Replies
Jun 5, 2011
How could i insert blank row in excel using vb dot.code?
View 1 Replies
Apr 1, 2011
how to insert a row into an excel file via vb.net?
I am familiar on how to do this inside the spreadsheet using vba - but not certain how to accomplish this within vb.Net.
View 4 Replies
Apr 24, 2010
I was wondering if it is possible to create a blank excel spreadsheet using a command button?
View 3 Replies
May 16, 2012
My Visual Basic .Net 2010 application reads data from an EXCEL spreadsheet which will be generated by my "customers". The responses to Alkis last year (23 July 2011) has been a big help and got me over a hump in my application. Now I am down to the last issue - how do I detect a blank cell? Valid data is numeric, starts at a fixed cell (A5 to be specific), and will be continuous until it ends with blank cells. While blank cells appear to print a "zero", when I try to use zero as an end criteria I get a 'System.InvalidCastException'. When I put in a specific end value (-1) in the last cell all works fine but that, of course, is an invitation to a user error.What is the difference between "Value" and "Value2" and where might I find documentation that explains the difference? [code]
View 1 Replies
Jun 8, 2011
I am Importing a Excelsheet(xls) in to my Application, but the date and Number column showing blank in dataset when comes to application. The values are there in Excel. Any other way to import the excel sheet to application, so that i should get all the values same as there in the excel sheet.
View 1 Replies
Aug 25, 2011
I use an OLEDB connection to read from an excel database, and this loop to read in all of the data from each of the columns
While reader.Read()
For i As Integer = 0 To reader.FieldCount - 1
temp = reader(i).ToString + ControlChars.Tab
output_file.Write(temp)
[code]....
Some of the columns contain date information, which are read in fine (usually as a string "2/20/2011" or so), but the headers of those columns are read in as a blank "". The headers for all the other columns read in fine, but not for the date containing columns.
View 2 Replies
Jul 14, 2009
what is the difference between OledbDataReader and OledbDataAdapter?
View 5 Replies
Dec 4, 2009
With ms access as the database storage software. And if you know of other ways on how to read data base on a certain criteria and displaying the results that meets the criteria.
View 1 Replies
Mar 31, 2011
I'm getting an "index out of bounds" exception and I can't figure out why. Unfortunately, my VS 2010 is in Spanish, so I can't say what the exact message says, but it's a System.IndexOutOfRangeException.
This is a table with a column holding Double values and a column with Date values. I have a form with two DateTimePicker controls, so the user can set a date range and they should see a number showing the total amount calculated between those two dates.
I did something like this:
Private Sub getData(ByRef total As Double)
Dim connection As OleDbConnection
connection = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data
[Code]......
View 6 Replies
Sep 21, 2010
I am building an app to read a customers .xls file in to a array list the array is the being reordered and im writing a file out the back end.its doing several lookups in the .xls file to see if relivant data is there and it writes a different file (9 different specs) depending what is in each line/column.Sound simple and I have the app working great however when I use a customers live data I get an ex.message = "Could not decrypt file" the file opens in excel witthout any password prompts however it does look like the sheet is write protected but all im doing in my app is reading the data.
Using fileConn As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & OpenFileDialog1.FileName & "; Extended Properties='Excel 12.0 Xml; HDR=yes; IMEX=1'")
fileConn.Open()
[code]....
View 1 Replies
May 18, 2010
What is the difference between OleDbDataReader & OleDbDataAdapter? What are there main functions? And what is OleDbCommand and what is the function of it?
View 1 Replies
Sep 28, 2010
I am using VB.net 2010 Enterprise Edition. I have an application in which I open and show an excel file. Here is a code snippet:
[code]...
When I try to browse away from the excel file using AxWebBrowser1.Navigate("about:blank"), a message box opens up asking me if I want to save changes to the file. I want to disable that message box.
[code]...
But this does not work.
View 1 Replies
Jun 18, 2010
I am using the OleDbDataReader routine to examine and manipulate Access databases.I am trying to find a procedure for indicating when the end of file is reached.I am getting an error message once the end of file is reached and another record is attempted to be read.The.HasRows modifier does not work; that merely determines if the source database contains rows, not if there are any rows remaining.
View 2 Replies
Jun 18, 2010
After connecting to a database using DataReader, how can I count the number of rows ?
View 2 Replies
Jun 22, 2009
When i run the program, i get error on the statement inside Do While Loop. The piece of code from my application is:
Dim selectString As String
selectString = "Select ContactName, Address from Customers"
Dim cmd As OleDbCommand = New OleDbCommand(selectString, con)[code].....
Object reference not set to an instance of an object
View 1 Replies
Sep 21, 2011
I have two tables say "Table1" and "Table2". I made a UNION query and saved it as "AllTimesFailure". It is worth mentioning, I am using Access DB. When I am trying to fetch the records from AllTimesFailure through oledbDataReader, it says "The Microsoft Jet database engine cannot find the input table or query 'AllTimesFailure'. Make sure it exists and that its name is spelled correctly.". I double checked query name and found correct but the problem still exists. when I run the same query as I pass through my command object, it works fine in Access query analyzer and fetches records normally.
[Code]...
View 8 Replies
May 6, 2010
I'm new to VB.NET. I'm trying very hard to not go screaming back to VB6...... I have a Query stored in an Access2000 database called 'build_VNMON'. (Does that make it a Stored Procedure ?) It uses multiple tables and multiple Union Statements to arrive at the desired results. It may not need to be as convoluted as it is, but I inherited it, and it works. What I really need is to output one column of the build_VNMON result to a text file, so I'm trying to use an OleDbDataReader.
[Code]...
View 2 Replies
Jun 29, 2011
BTW this issue occurs in any MS office program when the VB.Net (or even VBA) is processing information.Example: In Excel, a worksheet is displayed on the screen. I start either, a VB.Net or VBA procedure and within 30 seconds the Excel worksheet (previously displayed) blanks out. In both VB.Net and VBA,ScreenUpdating = False. My expectation is that the previously displayed screen would stay static as if I left my desk to get a cup of coffee; came back and the same ole Excel worksheet was still there?Of course, setting VBA Screen Updating = False accomplishes two goals: 1) speeds up processing and 2) saves the user from seeing unnecessary "garbage-processing" steps.Why does VBA or VB.Net ScreenUpdating = False not freeze the screen at the time of its invoking?
View 11 Replies
Apr 7, 2009
Suppose i have two strings which is given below.
CODE:
Where ever i find , it should be replaced one blank line and " replace by "
When i migrated the data from MYSQL to SQL Server 2005, i found few problem in one of the column. In MYSQL indicates as new line and " indicates as ".
View 7 Replies
Jul 29, 2011
I am reading from an excel information from column 'D' where something in column 'E' is <> to something. This is fine, but I want to change the value of column 'E' once it has read the information from column 'D' so that next time it reads it, it wont read that same line again, because column 'E' will have changed value.[code]This line is the one that doesnt do anything, but I want it to update the value of column 'E' with Yes: cmd. Command Text = "UPDATE [Sales$] SET (Delivered) values (Yes)"Also, can anyone spot why it may be missing out the first of the 'SELECT' queries.This line works:"SELECT Phone FROM TblContacts WHERE " & Event_query & Condition & Abs_value however it doesnt get the first one ever, but all the rest that meet the query?
View 5 Replies
