Pass File Directory between button click

Question

How can I pass file directory between two button click method?

I'm selecting csv file and put the CSV name to TextBox

private void Button_Click(object sender, RoutedEventArgs e) { OpenFileDialog ofd = new OpenFileDialog(); ofd.Filter = "CSV|*.csv"; ofd.ShowDialog(); csvName.Text = ofd.SafeFileName; }

Second button should start reading CSV file selected into first step

private void Button_Click_1(object sender, RoutedEventArgs e) { //string path = ; StreamReader srd = new StreamReader(); }

Create a form level variable and store the directory path in it in button1 click and use it in button2 click. — Chetan
– Chetan, Commented Dec 6, 2017 at 8:35
Sidenote: Don't do (synchronous) file I/O on the GUI thread. It will make your App appear unresponsive. — Fildor
– Fildor, Commented Dec 6, 2017 at 8:55
Read up on MVVM. Doing "button_Click" on WPF is painful to see because it's painful to program. You are resisting WPF if you go against it's design patterns. — nvoigt
– nvoigt, Commented Dec 6, 2017 at 8:56
To add to nvoigt's comment. The MVVM-alternative would be using Commands. — Fildor
– Fildor, Commented Dec 6, 2017 at 8:57

Phanindra · Accepted Answer · 2017-12-06 12:52:58Z

csvName.Text = ofd.SafeFileName; SafeFileName doesn't return the full path it just returns the filename, which is not enough for the button(Button_Click_1) the start reading . Instead use ofd.FileName; this give the complete path. Assuming csvName as TextBox.

declare global variable

public string FullFileName{get;set;} private void Button_Click(object sender, RoutedEventArgs e) { OpenFileDialog ofd = new OpenFileDialog(); ofd.Filter = "CSV|*.csv"; ofd.ShowDialog(); csvName.Text = ofd.SafeFileName;

FullFileName=ofd.FileName; }

private void Button_Click_1(object sender, RoutedEventArgs e) { using(var reader = new StreamReader(FullFileName)) { // do your action here } }

that's correct, but I want to display just file name inside the TextBox
add a global variable to hold to file full path and use it . modified the code check it

hitesh sharma · Accepted Answer · 2017-12-06 08:55:45Z

you can read the text of csvName in the button2_click event.

string path = csvName.Text;

or you can use a variable to save the value of the textbox and use that too.

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