Windows forms application txt write code#
Windows forms application txt write windows#

Loop through each row of the ListView, pull the text data from each column in turn and write it to the text file, adding a TAB character after each item.Use a StreamWriter to access the chosen file.Use a FileStream to set up the file you are going to write to.The steps involved in doing this are as follows: You would then pull these out first and assign them to the columns, before using the Do While loop to read and display the rest of the file.Īlthough a ListView's key purpose is to display existing data, there may be times when you have edited the content and want to save it back to a text file.

Windows forms application txt write code#

If you don't want to hard code those column headers, you can change the text file structure and have the column headers written to the first line of the file. I have also set the width property of each column in the code above, because the default width would result in some of the longer strings being truncated otherwise. Now, when you run the project again you will see the data neatly tabulated in the ListView. You can make this change via the Properties Window or in code. By default it is set to LargeIcon, with the result you see in the screenshot. The first problem is that the View Property of the ListView needs to be set to Details.

You will also need to include an Imports statement for System.IO at the top of the Class file.Īlthough the above code will successfully access the file, read and split the data and then populate the ListView, the result you will see may not be what you expect or want: You'll see that I've used a variable to hold the path to the file that contains the data. MsgBox( 'Error reading file.' & ex.Message) ' Pull out the first element in the line and assign it as ' Read the next line in file and Split it using the TAB. ' Create a variable for the ListViewItems ' Variable to hold data as it is read line by lineĭo While SR.Peek -1 ' Use Peek to read the file until there are no more lines ' Declare StreamReader and pass the Path of the text file to be read as a Parameter Private Sub btnGet_Click( ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGet.Click Here's the code that carries out those steps:

Then the remaining two elements are pulled out of the String array in turn and assigned as the SubItems of the ListViewItem.

Next, the first element is pulled out of the String array and used as the item for the first column of the ListView (the ListViewItem).

As each new line is read, it is split by means of the TAB character and temporarily stored in a String array.

Use a StreamReader which accesses the text file and then reads it line by line.

(The uneven layout is caused by the use of the TAB as the delimiter)Īn easy way of transferring this data from the file to the ListView is to: The content for each column item (or cell) is delimited by the use of a TAB character.Ī simple text file along these lines might contain the following entries: Each line of the text file represents one row of data to be displayed in the ListView. Let's start with a scenario where you have a txt file that contains the data.

Windows forms application txt write windows#

You can use a simple text file as the data source of a Windows Forms ListView. The Windows Forms ListView is designed to display data.