I have a form with a couple of combo boxes. The first combobox adds items based on each row in an excel sheet.
Public Sub FetchExcelValues(ByVal ControlType As String, ByVal control As Object, ByVal xlApp As Object, ByVal xlWorkBook As Object, ByVal xlWorkSheet As Object, ByVal column As String, ByVal row As Integer)
[Code]....
This basically reads each cell in the specified column until it hits a blank cell. Then it takes the value of each cell and adds it as items to the first combo box. Now, what I want the code to do next is to take the selected item from this combo box and look for a match in another worksheet. When it finds a cell that matches, it should pick up the value from column B of the same row as the match. There might be more than one match as well, so every time it finds a match, I want to pick up the value of Column B of the same row and add THAT as items in the second combobox.
I need to do a search-system from excel file. User can put some word to a textbox and then VB looks for this word from excel fail from first column and if it finds, then it writes the corresponding value from next column to a label.
I got so far this:
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim oExcel As Object = CreateObject("Excel.Application")
[Code].....
but on that underlined if sentence it gives error "Object reference not set to an instance of an object". Without that if sentence it shows the value, but I would like that it finds the right one.
i want to create system that can search and open 1 excel file from multiple excel file.Since there are too many excel file, i create a database(using excel) which list all the excel file and sorting it by project name in which i want to retrieve the excel file through project name. this is the example database that i had create:
ProjectName ExcelFile PA201 d:Project.xlsx
i just want to design 1 user interface,type the project name in the textbox then click command button to open the excel file but i don't know the coding.
I want to get a value from 12 excel sheet. is there any way that i get the values without opening the excel sheet? I am using vb.net. if there is a way to read values without opening the excel file.
I am trying to read data with a test routine from a fairly simple 3rd party Excel file. The file has three sheets and was created by Open Office 3.x as an 'Excel 97/2000/XP .xls' file. The later, still to be programmed, application must later run on machines with Windows XP Professional using the 2.0 .net framework and no Office package installed. The content of the file does not need to be modified by the later application. For some reason, numeric values are not read correctly. They "convert" to DBNull. I've searched around a bit but not found a 'simple' solution for solving this problem. Adding 'IMEX=1' or 'HDR=Yes;IMEX=1' to the connection string results in an error 'Installierbares ISAM nicht gefunden' (installable ISAM not found).
Based on various examples I've found, I've written the following test code: Option Strict On Option Explicit On Imports System.Data Imports System.Data.OleDb Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click [Code] .....
I am new to VB.NET and I am trying to read a line of data from a .csv file. For some reason the line of code below is returning "System.__ComObject", why? I verified that the cell contains "4/8/2011 9:20".
I'm using VB.Net's Excel component to read Excel file, but the performance is totally slow, since it has to loop through cells to get values. Reading a file containing one sheet with 1162 rows and 105 columns (which is small size compared to my general requirement) already costs more than 5 minutes.1. I want to ask if any of you have suggestion on reading such an Excel file with better performance, except OleDB, cuz most compies here have vesion problem?2. Is it normal that it tooks a long time for Excel component to read Excel file, or is it that I implement the code in a wrong way?
When I look at a file on my hard disk, e.g. test.csv, when I look at the Properties of the file, it is officially known as, "Microsoft Office Excel Comma Separated Values File", and file types of .pdf are listed as "Adobe Acrobat Document", etc. etc. All of this information can be seen in Windows Explorer too when my folders are displayed by Details. How do you get at this "type of file" information with .NET?
I am creating a maths programs that draws graphs for the user. so far i have placed 22 values into an array and now i need to import them to excel, draw the graph and import the graph back into the program to display them.[code]...
I'm creating a search function to search through a binary file and find a record based on the users input. Surprisingly, that isn't the problem! The problem I'm having is that as part of this I'm using a procedure to display results in text boxes, and I'm getting the error "Too many arguments to private sub display customer"I've encountered this error before, but never really knew what it was... Here is my code.
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click FilenameCust = "F:\College\CustomersFile.bin"
i am having a few problems with something i need to create. it firsts needs to get source code of a url i specify, after which i need to click a few buttons so it gets different parts (extract) of the data that i need from the source code and display it in a different text box if possile. (while leaving the original sorce code intact)
I am using asp.net oledb to export information to excel file. I encounter problems when the information to export becomes too big, in this case the code I have given below, the excel file generated becomes an empty spreadsheet.If I changed the loop to 1123 for insertion of the rows. The generated excel file is fine, 1125 rows, and 4 columns shown.A test program in windows form is also working fine regardless of how many rows.[code]I couldn't find a solution to my problem as well. What I did eventually was to run the process using another separate windows service. The code works perfectly fine running from a windows form or service program, but not asp.net, not sure why.
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
i have this excel file that contains description and 2 date (start date and end date) and i want to using vs 2008 to search the excel and get the warning box when condition is met.The condition is, when our computer date are 3 days before the end date of the excel data's end date it get the warning box message of every data that will expires.
I want search word in excel with some word .I can search with full word but i don't know how to search with some word Example.. When i put "123" in textbox i want result found is "123xxxx" show in textbox or listbox
this my code how i will can do.
Private Sub Search_form_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Search_form.Click xlSheet1.Application.Range("E1").Cells.Select()
So I have an excel app with a drop down list and it contains many values. Is there a way I can just search through that drop down list in vb.net? I can't seem to find where these values that populate the drop down list even come from So I thought just searching through it is easier?
I wanted to know if i could use vb.net (visual studio) to create an application that seaches these worksheets for a key word then returns any rowns with this key word on?
I have a search textbox in my form. I also have, textboxes for computer name, mouse serial number, monitor serial number and phone number. While in my database, they are all reside in one table named tblComputerAsset. I am using Access for my Database.
I m writing my first ever application.I want to make a data search engine exactly same as the excel sheet has.The search form is a owned form and has one combobox to specify the search criteria that in which column of the database table i want to search and a textbox to write the search item.What i want is when i type 'A' in the textbox and click the findAll button the search result should display the first matched record in the textbox of owner form and then if i click findNext button the search result should display the next matched record.Same like excel Find and Replace Window.
I can open and read and write to excel, but I need some help on how to search through column A to find a particular text such as B22-11, once found then I need to get the row number (count).
Essentially all I want to do is have a user form where you enter a reference number, hit enter and it searches an excel 2010 spreadsheet for that reference number. If the reference number is found it returns the associated name which is in the cell in the column on the right. (e.g. ref = A1 & name = B1).
I am writing a code to search through the entire listbox items and highlight them whenever user enters text in textbox. I am looping through textbox items which are entered using a 'comma' . But the code fails to add it to selected indices when user types multiple items using comma. It works fine for single items.[code]
1. I get a list of excel files from a dir into a list box and search for number by select each files at once. I want to select multiple files at once and search them one by one.May be using checklistbox.
2. The output is shown in a new window (labels) with result from that particular file. If multiple files are selected that the output should show result from all files in different labels.
3. Excel program stays open in memory after closing my application.
4. Also I cant get the app to display message "maskedtextbox1.text" not found in the sheet.[code]
I get a list of excel files from a dir into a list box and search for a string/number by selecting each files at once. I want to select multiple files at once and search them one by one.May be using checklistbox.
2. The output is shown in a new window (in labels) with result from that particular file. If multiple files are selected than the output should show result from all files in different labels.
3. Excel program stays open in memory after closing my application.
4. Also I cant get the app to display message "maskedtextbox1.text" not found in the sheet. If I do after line 30 Else messagebox.show "String not found", it goes into loop or displays the message even if the string exists in the excel file.
I have a delete method for a binary search tree that only deletes the last two values that were entered in, and when it tries to delete anything to the left of the root or even the root itself it returns a null pointer exception.
Public Function Delete(ByVal key As Integer) As Boolean Dim current As Node = root Dim parent As Node = root Dim isLeftChild As Boolean = True
I am writing a code to search through the entire listbox items and highlight them whenever user enters text in textbox. I am looping through textbox items which are entered using a 'comma' . But the code fails to add it to selected indices when user types multiple items using comma. It works fine for single items.
Private Sub TextBox1_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyUp If (e.KeyCode = Keys.Enter) Then ListBox1.BeginUpdate()
I have a DEM file(Digital Elevattion Model File) and I am trying to open the file,where we have Latitude and Longitude values inside the DEM file.And, Now I have opened the file using Filestream and Read the file using BinaryReader.But, I am having a trobule in getting the values of Latitude and Longitude.I am getting Byte values randomly as 1,202,31,271 etc.But, we dont have latitude and longitude values more than 180,and also I am not getting 16 bit UInt values.For example, the values should be like Latitude 20.00416666666667 and Longitude 39.99583333333333.So,read the correct Byte values of the DEM file.The code I have used till now is:
Dim fs As FileStream = New FileStream("C:UsersadminDesktopHeader and DEM fileE020N40.DEM", FileMode.Open, FileAccess.Read) Dim rd As New BinaryReader(fs) Dim convertDB As UInt16 For i = 0 To rd.BaseStream.Length
