.net - Excel Data Export Fixing Number Errors/removing Green Triangles
Aug 8, 2011
After exporting data using a third party component the data in the excel sheet isn't type correctly. Excel thinks that some values are string while they are numbers and a little green triangle shows up.
We've coded the following to fix this:
For Each objCell As Microsoft.Office.Interop.Excel.Range In objWorkSheetReport.Range(objWorkSheetReport.Cells(1, 1), objWorkSheetReport.Cells(Me.RowCount + 10, Columns.Count + 10)).Cells
[Code].....
This removes all those little green triangles but is really slow.
Is there a faster way to convert a Range of data quickly so the green triangles don't show up?
1. I have updated the image based on feedback from Steven_W so there are 4 triangles in the right hand diagram instead of 3 which makes more sense!
2. update image again to label sub triangles as A, B, C, D in grey
What is the pseudo algorithm for mapping a coordinate (x,y) in the left hand square such that a coordinate (u,v) is produced within the rectangle bounding the triangle on the right so that points are interpolated between the mapping points as illustrated on the diagram? 1 to 4 are equidistant on the triangle from left to right even though my illustration is a bit rough around the edges :)This is to generate a rough and ready panel for the lid of a skybox from the top half a 360 degree panoramic photo.
update 3 based on feedback.The first step appears to be working out which triangle we are in for the left hand diagram based on the (x,y) coordinates.The second steep is to work out the distance along the vertices of that triangle. Then use those distances to get the coordinates on the related triangle in the diagram on the right
update 4 - code to identify triangle in left hand diagram
Public Function TriangleIndex(ByVal x As Integer, ByVal y As Integer, ByVal w as integer, ByVal h as integer) as integer[code].....
I am testing out this code which creates a excel file, and then call a sub to insert data into the file. The excel is created, but the function is not inserting the data. I am getting a error "External table is not in the expected format". I do not know what could be the problem.
This is the code below:
Imports Microsoft.Office.Interop Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
I have the following code which works fine. However, I want to change one format when I export it to excel
Colum 3 is Sort Code and have the format 00-00-00, I want to change it to 000000 i.e., remove the dashes.
When exported to excel I use a formalue (Substitute(A1, "-", "") and this removes the dashes. But what I want to do is remove the dashes before exporting to excel... Please see the code below for datagrid - excel export, highlighted is where I think the one line code should be..
I am attempting to export sql data to excel but am getting an error message when I try to filter the data in the select statement (it works if I don't filter the data). I think something is not right with the WHERE clause but not sure what. [code]...
I was using ContentType="application/vnd.ms-excel" on my web site to display a datatable in an excel workbook on the client. It worked great. Now that I have upgraded to Office 2007 and vb.net 2010, I get a warning saying that the file is in a different format than specified by the file extension (.xls). I googled new ways of exporting data to excel, but have yet to find a good example. I usedMicrosoft.Office.Interop.Excel which worked great, except I read that you are not supposed to use this on a web server.
Is there a way to save either an array or list of data to excel without looping through the array/list? I know I have read from Excel this way but what about writing? Seems it would be faster.I'm collecting data from a device and storing into a list, then I copied it to an array getting ready to blast it in a single shot to Excel and got stuck.
This code works well however when data is exported to excel in one field some values are wrong. Instead for example populating 16-12-19 it populates 43815, 01-03-99 it populates 36220. Again, if the sort code is like 20-72-68 or 60-01-22 it is populated the same way, which is correct. If the value is a date lookalike then this problem appears, but if not then the exact value as displayed on the grid is shown in excel.
I inserted the code (highlighted in red) to set all the fields as text values. Right, it is exported and when excel spreadsheet is opened the field property is text, but the problem still exists. Why doesn't excel display it as it is displayed on the datagrid and database, instead of changing it even when set text.
I am working with Vb.net and this code below works fine. However, when I review the data exported to excel I have a problem with one particular field i.e., sort code. Sort code in the database is in the format 00-00-00. Therefore if it is 12-11-09 or 11-01-66, a look alike of a valid date it is disaplyed as 12/11/2009 and 11/01/1966 in excel after the export. Excel thinks its a date which is incorrect. I expect it to show 12-11-09 and 11-01-66.
Private Sub ExporttoExcel() 'verfying the datagridview having data or not If ((DgvQuarCommit.Columns.Count = 0) Or (DgvQuarCommit.Rows.Count = 0)) Then
i make my textboxes to export data into an excel template....it works fine but there are few errors too..but i don't know how to fix it...here is my code.
Dim objExcel As Object Dim objWorkBook As Object Dim objWorkSheet As Object
[Code]....
for the objworkbook.SaveAs,it will always ask me to replace to file and i would like to use SAVE command...bu it not works..anything happen?sumore everytime i run this process,it will tell me the file is read-only while the setting doesn't shows that the file is read-only...and i have to go to task manager and end the EXCEL process by myself to run the process again
What I was wondering is if I had a ListView1 with 1 row and 5 subitems, could I export that whole row into an Microsoft Office Excel spreadsheet, by defining in which Excell row/column I want to add each subitem into?
I have an App. I have a lots of datas to handle.So,I wonder if I can click a button and launch Excel and export my datas to Excel.So I can edit my datas in the Excel rather than in my App.
[quote]I get succces to export data to excel but only data(details) can display in excel.The title for each column can not display.The following is my coding.So may i ask how to display the title for each column together with the data(details)
Private Sub BtnExportGrid_Click_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnExportGrid_Click.Click
I have created an application that can store employees details, that part is not a problem and frankly is sorted, I have used a sql database to save my data, all information is displayed in TextBox controls on my main form.
The part I am struggling with is creating 2 buttons.
The first button I want to be able to import data from an excel file into my data set
The second button I want to create is a back-up button, which exports all the data from my dataset into an excel file
I'm using an xsl stylesheet to export data to excel. In the xsl file I have coded to put protection on the worksheet. When the excel file opens, if I check under Tools - Protection, it appears that the protection was set, but I am still allowed to select and update cells in the worksheet. If I turn the protection off and then turn it back on, it is applied as expected. Has anyone had this type of situation where the xsl sheet appears to be applied correctly, but the proctection that was applied doesn't work?
I use this simple code to export data from my dataset to excel. Now i want to export that data with a condition from the "cbVecka" combobox. I can't figure out how to do that. Any Ideas?
I have a VB.Net application and once the data in the Gridview is populated I require it to be exported to an Excel sheet. Access (.MDB) is the database used.
i have a form with DataGridView to show table from database. is it possible for me to add a button then when click, the data from the DataGridView will export to a new excel file?? if possible, can teach me how to do it?
