文字コード指定でファイル書き込みを行う方法

文字コード指定でファイル書き込みを行う方法
VB.NET

Dim sw As New System.IO.StreamWriter("C:\write\1.txt", _
    False, _
    System.Text.Encoding.GetEncoding("shift_jis"))
sw.Write(TextBox1.Text)
sw.Close()

C#

System.IO.StreamWriter sw = new System.IO.StreamWriter(
    @"C:\write\1.txt",
    false,
    System.Text.Encoding.GetEncoding("shift_jis"));
sw.Write(TextBox1.Text);
sw.Close();

ファイルに追加書き込みを行う方法
VB.NET

Dim sw As New System.IO.StreamWriter("C:\write\1.txt", _
    True, _
    System.Text.Encoding.GetEncoding("shift_jis"))
sw.Write(TextBox1.Text)
sw.Close()

C#

System.IO.StreamWriter sw = new System.IO.StreamWriter(
    @"C:\write\1.txt",
    true,
    System.Text.Encoding.GetEncoding("shift_jis"));
sw.Write(TextBox1.Text);
sw.Close();

一行ごとにファイルに書き込みをしていく方法
VB.NET

Dim sw As New System.IO.StreamWriter("C:\write\1.txt", _
    False, _
    System.Text.Encoding.GetEncoding("shift_jis"))
For Each line As String In TextBox1.Lines
    sw.WriteLine(line)
Next
sw.Close()

Dim sw As New System.IO.StreamWriter("C:\write\1.txt", _
    False, _
    System.Text.Encoding.GetEncoding("shift_jis"))
For Each line As String In TextBox1.Lines
    sw.Write(line + sw.NewLine)
Next
sw.Close()

C#

System.IO.StreamWriter sw = new System.IO.StreamWriter(
    @"C:\write\1.txt",
    false,
    System.Text.Encoding.GetEncoding("shift_jis"));
foreach (string line in TextBox1.Lines)
{
    sw.WriteLine(line);
}
sw.Close();

System.IO.StreamWriter sw = new System.IO.StreamWriter(
    @"C:\write\1.txt",
    false,
    System.Text.Encoding.GetEncoding("shift_jis"));
foreach (string line in TextBox1.Lines)
{
    sw.Write(line + sw.NewLine);
}
sw.Close();

Streamを使用しないでファイル書き込みを行う方法
VB.NET

Dim filePath As String = "C:\write\1.txt"
Dim enc As System.Text.Encoding = System.Text.Encoding.GetEncoding("shift_jis")

System.IO.File.WriteAllText(filePath, TextBox1.Text, enc)

System.IO.File.WriteAllLines(filePath, TextBox1.Lines, enc)

System.IO.File.AppendAllText(filePath, TextBox1.Text, enc)

C#

string filePath = @"C:\write\1.txt";
System.Text.Encoding enc = System.Text.Encoding.GetEncoding("shift_jis");

System.IO.File.WriteAllText(filePath, TextBox1.Text, enc);

System.IO.File.WriteAllLines(filePath, TextBox1.Lines, enc);

System.IO.File.AppendAllText(filePath, TextBox1.Text, enc);