I am trying to create double and number format cells in excel using NPOI library. I used code like Dim cell As HSSFCell = row.CreateCell(j) cell.SetCellValue(Double.Parse(dr(col).ToString)) In excel numbers are aligning right but when I check format it is showing in "General" then I changed my code to like below
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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 RepliesUsing NPOI and attempting to follow a tutorial here: [URL]..I'm coming across an "Object reference not set to an instance of an object" error at this line: sheet.GetRow(1).GetCell(1).SetCellValue("some test value")
when trying to use this code:
Imports System.IO
Imports System.Web.Security
Imports NPOI.HSSF.UserModel
Imports NPOI.SS.UserModel
Imports NPOI.SS.Util
Imports NPOI.HSSF.Util
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Yet the question is still open...why didn't the code in the first example work? Do you have to declare every new row of data? What happens when you have lots of rows of database data?
I have to provide an Excel file as an output. I have to color some of lines and make them bold.The input is based on a dynamic list (in memory) and it also could be based on CSV file that I'm already provide today (based on the same dynamic list).I'm wondering what would be the most efficient way (in terms of performance) in order to provide the colored Excel output?Should I export directly from dynamic list into Excel - or - Should I export from CSV into Excel ?
View 7 RepliesHow to Eliminate duplicates in excel using macros and place it in another excel sheet The duplicate record must also be transferred.
View 2 RepliesSo I've got this Excel sheet of employees which have all the information about them. I'm trying to import this info into AD, but in order to do that I need to get the username for these users as well. And I would like vba code or vb.net code that basically takes the value of every row in column D and looks for it in AD and returns the username and adds it to column A. Would something like this be possible?
View 1 Repliesi need to generate an excel sheet from an excel template which contains drop down lists. I need to use the template and populate the with data from datbase and select the appropriate value from the drop down lists and generate the new excel sheet.
View 2 Repliesim looking for the method how can i copy from original sheet to my new sheet.
View 3 Replies[code] objExcelAppDataSheet is the excel application's object and strTemplatePath is the path of the excel file.This excel file is like a template that i am using in my application. In this file some cells are merged. After copying to the new sheet the formatting of the sheet does not remain same. Columns sizes are changing. Why this problems occurs? Is this MS office versions issue??
View 2 RepliesVB.NET code to change Excel 2007 Column Cell Format from Text to a Number no Decimal.
Right now Column F shows values that look like
3E+13
3E+13
Manually changing it to a Number with No Decimal shows the correct value.
30000046605562
30000041582875
Of course I would like to automate this.
i Have this code which populates a number of combo boxes from an excel document, the problem is that it only populates the 1st three lines, does anyone know why this is??
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How to convert a number from an Excel text in an Excel Form
View 1 RepliesUsing vb.net 2008 to create an Excel ss. I am trying to add a new sheet and it does but it puts it out of order. It puts it as the first sheet. I need it as the last one ( furthest to the right).
Code:
With xlWorkBook
.Sheets("Sheet1").Select()
.Sheets("Sheet1").Name = "config"
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I have created a connection to an excel file. This is the code i created to select the data in the excel. But i want to make the [sheet1$] to be dynamic, which means it will get the sheet name depending on what is in the excel workbook. This workbook has only one sheet. This is to make sure that there will be no error when the sheet names are different. [code]
View 10 RepliesI am using VB 2008 to do some excel automation and I am stuck.I am trying to make the cell alignment to be left-top. When I programmatically insert a new worksheet, the alignment defaults to "left-bottom".
View 3 Repliesi have installed SQL server Express Edition 2005 by using my application i am saving data in tables which is created in SQL Server so that i have to copy in that data in to excel file
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comapre Two excel sheet using C#?
does anyone know how to transfer all the data's of datagrid to excel sheet? data's in my datagrid is not all come from my database/recordset... i have two columns of data's coming from textbox.
View 1 RepliesI have data exported from DataGridview to Excel Sheet but I have problem viewing the excel sheet until I log out of the Application completely. I have these code to release the link. What am I doing wrong?
'Save the workbook and quit Excel.
oBook.SaveAs(sSampleFolder & WrkSht)
oSheet = Nothing
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I am sending some data from a datagridview to a Excel sheet.That works.But I have a problem with Date's , in the datagridview is 05-12-2012.When i put it in a new excelsheet it is 05-12-2012 00:00.I found something for changing the format of Date in a Excel cel.[code]But I need , 05-12-2012 What do I put after NumberFormat? I want to do it by code and not in the Excel sheet
View 2 RepliesI looked at some on here and found this:
Public Sub Test()
Dim xlApp As Global.Excel.Application
Dim xlWorkBook As Global.Excel.Workbook
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I am trying to get excel sheet name here is my code but it throws an exception "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index"
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I have a datagrid which i manually entered value into. is there a way to get the value of the datagrid to a datatable or dataset
View 3 Replieshow to connect Excel sheet with VB.Net
View 5 Repliesi created excel sheet in visual basic 6.0
Option Explicit
Dim val As Integer
Private Sub cmdCalculate_Click()
Dim exclApp As Excel.Application
[code]....
like this now i have to add records like if add values in my text box then it should to calculations and then it should be display in excel sheet i can open excel sheet but i cant add values?
Is it possible to store Excel sheet and it's corresponding rows into a Dictionary and then later retrieve the rows into a DataGridView depending on the selected Sheet name from a combo?
View 4 RepliesI post a question similar to this a few days ago, but nobody answer. Now I modify my request a little bit, I want to read an excel file using VB.NET program. I know the logic below can do this. The logic is shown below.
But I have a question. This logic needs the worksheet name, but usually my application doesn't have this information, the worksheet name cannot be hardcoding. I have 2 request:Can I always upload the first sheet from the selected excel file. (ACCESS can do this without knowing the worksheet name).
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I'm able to add a new sheet to an excel ss and name it. But to tighten up the code I thought a counter was in order. So I tried a while loop.
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A few oddities, for one this makes a total of 11 sheets. I thought this would make a total of 7. The first 3 then adding 4 from the while loop. I thought a counter starting at 0 then going to < 4 would add 4. Also I'm getting an error, noted in the code, it expects an end of statement. It doesn't like the +=. I'm trying to add to the sheet name/number of Taroko #. Maybe it's trying to start at 0 there. So I'll initialize the namectr to start at 2. No still doesn't work.
I think my syntax is simply bad for the statement..Sheets("Sheet4").Name = ("Taroko # " + nameCtr += 1) ' error here also tried & instead of +.
I have this issue that occurs with me and driving me crazy i have a report that contains thousands of records and i need to export it to excel , but the excel normal extension .xls
is showing missing records at the end of the file , so i save my file as an .xlsx extension it saves correctly but when i open the file it generates an error
"Excel cannot open the file '<var>filename</var>.xlsx' because the file format for the file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file."but when i test the file i drag it and open it in an empty notepad all the records shows up correctly
Am devoloping a windows form application which need to retreive a particular column from Excel sheet and i want to display that data in a dropdown menu.
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