Open file vb .net

It does not appear to like me declaring the variable xlApp as an Excel. By the way, my application is a. Also, this all began because one of my users had IE10 installed then uninstalled with IE9 reinstalled. After this action, she could no longer open an existing Excel file located in a server folder using the Response.

Redirect statement. I'm attempting to investigate another means of opening the Excel file besides using Response. Redirect which works for everyone else. Knowledge is the only thing that I can give you, and still retain, and we are both better off for it.

I used Spire. XLS to read Excel documents. Ask a question. Quick access. Search related threads. We've now wrapped up our code in an If Statement. The first line of the If Statement is this:. This tests to see whether or not a file exists. Again, you start with System.

Then you access another object of System. IO - the File object. This has a method called Exists. In between the round brackets, you type the name or variable of the file you want to check. The value returned will either be True if it does exists , or False if it doesn't. If the file exist then we can go ahead and create our StreamReader; If it doesn't, we can display a error message for the user. So that your programme will work, there is a file below called "test.

Download this to your computer and save it to your Documents folder. Download the "test. When you have done that, run your programme again. You need to create a FileStream object to create a new file or open an existing file. For example, for creating a FileStream object F for reading a file named sample. The FileMode enumerator defines various methods for opening files.

The preceding example provides simple file operations in VB. However, to utilize the immense powers of System. IO classes, you need to know the commonly used properties and methods of these classes.

We will discuss these classes and the operations they perform in the following sections. Reading from and Writing into Text files. It involves reading from and writing into text files. The StreamReader and StreamWriter classes help to accomplish it. FileSystem object to write to files. FileSystem object to creating, copying, deleting and moving files and folders. File Encodings Describes file encodings and their use.

Walkthrough: Manipulating Files and Directories in Visual Basic Demonstrates how to create a utility that reports information about files and folders. Troubleshooting: Reading from and Writing to Text Files Lists common problems encountered when reading and writing to text files, and suggests remedies for each. Skip to main content.