Insert Blank Row Into Existing Excel File?
Apr 1, 2011how 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.
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Insert New Blank Row In Ms.excel
Jun 5, 2011How could i insert blank row in excel using vb dot.code?
View 1 RepliesInsert Excel Data Into Existing MS Access Table?
Mar 23, 2012I have this piece of code which picks the data in an excel file. At the moment i have the data into the dt table. how do i write the data in dt to FECHO_UNICRE table at the UTLT.accdb database? I want to fill the table just after deleting the existing records.
Octavio
Private Sub Unicre_Calculos_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
'Try
[Code]....
Open Excel File And Reusing Existing Excel Instance?
Jul 13, 2010I have an application the contains several excel files bundled with it. I'm not opening the files and processing them within my application. These files contain a data-connection to reload all of the pivot-tables within each excel file. I have a 'link' on my form, that when clicked, it determines which file to open and calls a sub using filename and executing Process.Start(filename) for any excel file I want to open. I have no problems opening any one of the files and then exiting excel.
The problem is when I 'close' a file, but don't exit Excel; then try to open another file(clicking link on form)... it creates a new instance of Excel.
I know from experimenting that the fileopendialog form will 'reuse' an existing Excel instance, IF it does not already have a file open.
How can I do the same thing without using the fileopendialog?
I don't want the end-user to have access to the folders where these files live. That's why I have multiple 'links' on my form, one for each xls that already exists. I just want them to be able to click on a link and the xls file opens AND if they choose to merely 'close' a file and not exit... Don't create a new instance of Excel, but re-use the existing one.
C# - OpenXML Add New Row To Existing Excel File?
Jul 12, 2011I've got lots of XLSX files and I need to append a new row after the last one in the file. I'm using OpenXML and so far I know how to open/create spreadsheet, but my search for adding new rows to existing files returned nothing.
View 1 RepliesHow To Add Data To An Existing Excel File?
Jan 13, 2011Please see the code below:
Dim objExcel As New Excel.Application
Dim objWorkbook As Excel.Workbook
Dim objSheet As Excel.Worksheet
[code].....
Adding To Existing Excel File From Datagridview?
Oct 17, 2010I'm trying to figure out what would be the easier method for what I'm trying to accomplish. What I have is in, on the main form, a datagridview that is bound to an xls file. I then have another form that the user can import/paste data to another dgv. This content then needs to be appended to the end of the main form's dgv. Would it be easier to add it straight to the dgv and then save it to the excel file or save it to the excel file and reload the dgv? Or does it matter? I'm not exactly sure how to do either method but I figured I would start here.
View 1 RepliesLoad File From Excel If It Has An Existing Cell
Apr 23, 2012the following is a working button to load excel data into a listbox. When I first wrote it I just used a loop to pull items 1-10 to do testing. Then sufficiently forgot about it and remembered just now. So in short here's the button:
[Code]...
Modify The Third Column Of An Existing Excel File?
Dec 18, 2009I want to modify the third column of an existing excel file. The problem with below code is a new file is prduced with the new values in Column C and erases all other values in the orginal file. I want to update the orginal file with the new values.
Public oExcel As Excel.Application
Public oBook As Excel.Workbook
Public oSheet As Excel.Worksheet
[Code]....
Writing Data To An Existing Excel File
Mar 16, 2010I'm fairly new to coding in Visual Basic, and I'm working on a project where I have to allow users to write data to an existing Excel worksheet (by entering the data into a form created in Visual Basic.NET). I've created a form that allows users to enter data such as the following:
[Code]...
Writing Data To An Existing Excel File?
Mar 15, 2010I'm working on a project where I have to allow users to write data to an existing Excel worksheet (by entering the data into a form created in Visual Basic.NET). I've created a form that allows users to enter data such as the following:
Name (First, Last)
Mailing Address
Email Address
Gender
Age
...and so on. I've programmed the data to be sent to the Excel file upon clicking on the Submit button in the form itself. I've also created the Excel file and placed it on my C: drive, but the problem I'm having is trying to send the data from the VB form to the Excel file itself. Can someone please show me some sample code or point me in the right direction as to how to get the submitted information from the form to save into the Excel file, please?
I'm trying to get the information to show up in rows and columns in Excel like the following below (the dashes are just to show that the information should be in rows and columns):
Name--------------------------Mailing Address-------Email Address-------Gender-------Age
John Doe---------------------2300 Jackson Street-------- xxx@xxxx.com-------Male---------17
Adding A Rdlc Report To An Existing Excel File?
Jun 2, 2011This may be a lengthy explaination, but I am hoping to make myself clear.I have an existing Excel file that is created using the following code:
Dim warnings() As Microsoft.Reporting.WinForms.Warning = Nothing
Dim streamids() As String = Nothing
Dim mimeType As String = Nothing
[code].....
Export Data From Gridview To An Existing Excel File?
Apr 7, 2012I need to save the results of each search that I run on my database, into an excel file. So it is an iterative process where the new search results are added on as new rows to the excel file in each export. I am running the following code which works perfectly fine but for the fact that each export is saved to a newly created excel file.[code]...
View 1 RepliesInsert Macro Into A Excel File Without Using The Excel Com Library?
Aug 30, 2010Is there any way to insert an existing macro into a existing excel file without using the excel library ? I need this to set the excel to print whole work book .I cannot use excel library because it will be done online in the server where installation of excel is not possible. I can however use the c#.net coding . I am using NPOI to generate the excel.
the macro is given below
Private Sub Workbook_BeforePrint(Cancel As Boolean)
If printed = False Then
Cancel = True
[Code]....
Import Single Column Excel File To Existing SQL Server Table?
Dec 15, 2009i need to import a Single Column Excel File to an Existing SQl Server Table.
View 1 RepliesBrowse Away From The Excel File Using AxWebBrowser1.Navigate("about:blank")?
Sep 28, 2010I 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.
How To Add / Insert Row Into Excel File
Jun 28, 2011This is my code to add a row to an excel file:
Public Sub Add_Records()
'==========================================================================
' Run an INSERT INTO command to add new records to the workbook.
'==========================================================================
Dim Variable As String
Variable = "15000"
Dim conn1 As New System.Data.OleDb.OleDbConnection(m_sConn1)
[Code] .....
It works fine as long as the variable Variable is a number. If I make it a string it doesnt work.
Screen Blanks After 1 Min Of Processing (of Excel File) / Refresh Or Freeze Screen To Avoid Blank Screen?
Jun 29, 2011BTW 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 RepliesInsert Value When Database Not Allow Zero Length String From Blank Ones
Apr 7, 2011I have problem insert records from my vb application to my access .mdb dataabse with all columns set as not allow zero length string and when I insert a records in which one of the column is null value it show allow zero length string error any idea how to create a code in visual basic in which allow zero length without change the configuration of the database?
For example my record have job_no name station 1 des 2 albert so I need to pass job number 1 to my access database but came out with error zero length string off course my access database is set no all to do so but I have my reason is that any sample code to force to accept blank strings?
IF Statement To Check If Textbox1 And Textbox2 Are Blank - Notify User That Must Insert A Value
Jan 22, 2010I am practicing abit with For Loops. My code works fine which i am very happy about. I have now moved on to inserting an IF statement. I want the IF statement to check if my textbox1 and textbox2 are blank and if they are to notify the user that they must insert a value. I thought this would be quite easy to do however i think i was again ignorant to the coding! See below.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim answer As Integer
[CODE]...
I want to concentrate on the IF statement only as the For loop is working just as it should. When i run the program and leave both textboxes blank and hit the button i receive an error saying 'Conversion from string "" to type 'Integer' is not valid.'
OleDbDataReader From Excel Gives Blank Line
Apr 8, 2010I 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 RepliesInsert Copied Strings Into An Existing?
Jan 21, 2012I have a textbox with exisitng text into which I'd like to paste copied strings. My problem is that when I paste (Clipboard.GetText().Trim), the existing text disappears.[code]...
View 11 RepliesInsert Form From Existing Project
Feb 7, 2011How can I add a form from one project into a new project, I dont want all the code just the form layout.My form has alot of textboxes and labels and I dont want to have to recreate it. I see the insert from existing item but not sure how to get just design and layout?I am going from 2005 to 2008 express if that makes a difference
View 1 RepliesInsert Text Into An Existing String?
Dec 15, 2011how can I insert text into an existing string? I am trying to interpret a solution in an earlier post "How do I insert test into a textbox in the middl of existing text"
solution given was int insertionlocation = 4;string newText = "text to insert";if (textBox1.Text.Length < insertionlocation) textBox1.Text = textBox1.Text.Substring(0, insertionlocation) + newText + textBox1.Text.Substring(insertionlocation); else textBox1.Text = textBox1.Text + newText;
I must determine both how and where I need to implement this solution.What follows is my work in progress. Keep in mind things are added and deleted as I work with it saving a user entry to a file
[Code]...
Update The Existing Items On Listview And Insert The New Ones?
May 21, 2011I have a listview which contains information. This information is retrived from database, 'till now ok. The problem is: I must update the existing items on listview and insert the new ones.
View 4 RepliesCopying Data A File Int An Existing File Where The Filename Of Both The Data File And Existing File Will Vary From User To User
Aug 5, 2011I have a workbook (Workbook1) that runs through some steps using visual basic, which ends up opening another workbook Workbook2). Once Workbook 2 is opened, I need to copy a section of data from it, into Workbook1 int a specific worksheet. I was able to do this by recording a macro, but the challange is, the name of Workbook 1, and Workbook 2, will vary by User. When I created the macro it uses the files as they are currently named. The section of code is below.
[Code]...
Create A Blank Excel Spreadsheet Using A Command Button?
Apr 24, 2010I was wondering if it is possible to create a blank excel spreadsheet using a command button?
View 3 RepliesReading EXCEL In 2010 Detecting Blank Cells
May 16, 2012My 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 RepliesCreate A Table And Insert Into Existing Access Database?
Jan 1, 2012Im working on a prog for my work. however, im stuck. I come to a spot where i need the prog to copy a sample table to an existing database. we can either simply copy the sample table, or as a last resort, create a new one from scratch.
View 6 RepliesDatabase - Insert A DataTable With Existing Key To A SQL Server Table
Mar 18, 2010I am working with VB.NET.. i have a DataTable called "QUESTION", containing 3 fields:
QuestionNumber (unique integer key)
QuestionText
QuestionType
In my SQL Server database I created a Table called "QUESTION" with the same fields.
QuestionNumber is defined as integer unique key, auto increment
Now, when i make a bulk copy to insert the DataTable into the SQL Server, the database overwrites my QuestionNumber from the DataTable and generates new ones (starting from 1 increment 1).
How do i have to change my database setup, that the original QuestionNumbers are copied into the database?