Question

c#怎么把ascii码转换成字符串

Answer 1

Public Function Diamond(ByVal num As Integer) As String
Dim i, j As Integer, st As String = ""
Dim m As Integer
If (num Mod 2 = 0) Then
Return ""
End If

'输出上三角形
For i = 1 To (num + 1) \ 2
For j = 1 To (num + 1) / 2 - i
st = st & " "
Next
For j = 1 To 2 * i - 1
st = st & Chr(64 + i)
Next
st = st & vbCrLf
Next
m = 64 + i
'输出下三角形
For i = 1 To (num - 1) \ 2
For j = 1 To i
st = st & " "
Next
For j = 1 To num - 2 * i
st = st & Chr(m - i - 1)
Next
st = st & vbCrLf
Next
Return st
End Function
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim str As String = ""
str = Diamond(11)
TextBox1.Text = str
End Sub

Answer 2

string str = "979899100";
string str1 = string.Empty;
for (int i = 0; i < str.Length; i++)
{
int j = int.Parse(str.Substring(i,2));
if (j < 64)
{
j = int.Parse(str.Substring(i, 3));
i += 2;
}
else
{
i += 1;
}
str1+= Encoding.ASCII.GetString(new byte[]{(byte)j});

}

Console.WriteLine(str1);