using System.IO;

private void simpleButtonSaveFileDialog_Click(object sender, EventArgs e) {
Stream memoStream;
xtraSaveFileDialog1.Filter = "txt files (*.txt)|*.txt";

if(xtraSaveFileDialog1.ShowDialog() == DialogResult.OK) {
if((memoStream = xtraSaveFileDialog1.OpenFile()) != null) {
// Code to write the stream goes here.

memoStream.Close();
}
}
}

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Imports System.IO

Private Sub simpleButtonSaveFileDialog_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim memoStream As Stream
xtraSaveFileDialog1.Filter = "txt files (*.txt)|*.txt"

If xtraSaveFileDialog1.ShowDialog() = DialogResult.OK Then
memoStream = xtraSaveFileDialog1.OpenFile()
If memoStream IsNot Nothing Then
' Code to write the stream goes here.

memoStream.Close()
End If
End If
End Sub

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using System.IO;

private void simpleButtonOpenFileDialog_Click(object sender, EventArgs e) {
xtraOpenFileDialog1.InitialDirectory = "c:\\";
xtraOpenFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";

if(xtraOpenFileDialog1.ShowDialog() == DialogResult.OK) {
// Get the path of specified file.
string filePath = xtraOpenFileDialog1.FileName;

// Read the contents of the file into a stream.
var fileStream = xtraOpenFileDialog1.OpenFile();
using(StreamReader reader = new StreamReader(fileStream)) {
// ...
}
}
}

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Imports System.IO

Private Sub simpleButtonOpenFileDialog_Click(ByVal sender As Object, ByVal e As EventArgs)
xtraOpenFileDialog1.InitialDirectory = "c:\"
xtraOpenFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*"

If xtraOpenFileDialog1.ShowDialog() = DialogResult.OK Then
' Get the path of specified file.
Dim filePath As String = xtraOpenFileDialog1.FileName

' Read the contents of the file into a stream.
Dim fileStream = xtraOpenFileDialog1.OpenFile()
Using reader As New StreamReader(fileStream)
' ...
End Using
End If
End Sub

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