Cara: Mencantumkan Dekode Terinstal
Anda mungkin ingin mencantumkan dekode gambar yang tersedia di komputer, untuk menentukan apakah aplikasi Anda dapat membaca format file gambar tertentu. Kelas ini ImageCodecInfo menyediakan GetImageDecoders metode statis sehingga Anda dapat menentukan dekode gambar mana yang tersedia. GetImageDecoders mengembalikan array ImageCodecInfo objek.
Contoh
Contoh kode berikut menghasilkan daftar dekode yang diinstal dan nilai propertinya.
private void GetImageDecodersExample(PaintEventArgs e)
{
// Get an array of available decoders.
ImageCodecInfo[] myCodecs;
myCodecs = ImageCodecInfo.GetImageDecoders();
int numCodecs = myCodecs.GetLength(0);
// Set up display variables.
Color foreColor = Color.Black;
Font font = new Font("Arial", 8);
int i = 0;
// Check to determine whether any codecs were found.
if (numCodecs > 0)
{
// Set up an array to hold codec information. There are 9
// information elements plus 1 space for each codec, so 10 times
// the number of codecs found is allocated.
string[] myCodecInfo = new string[numCodecs * 10];
// Write all the codec information to the array.
for (i = 0; i < numCodecs; i++)
{
myCodecInfo[i * 10] = "Codec Name = " + myCodecs[i].CodecName;
myCodecInfo[(i * 10) + 1] = "Class ID = " +
myCodecs[i].Clsid.ToString();
myCodecInfo[(i * 10) + 2] = "DLL Name = " + myCodecs[i].DllName;
myCodecInfo[(i * 10) + 3] = "Filename Ext. = " +
myCodecs[i].FilenameExtension;
myCodecInfo[(i * 10) + 4] = "Flags = " +
myCodecs[i].Flags.ToString();
myCodecInfo[(i * 10) + 5] = "Format Descrip. = " +
myCodecs[i].FormatDescription;
myCodecInfo[(i * 10) + 6] = "Format ID = " +
myCodecs[i].FormatID.ToString();
myCodecInfo[(i * 10) + 7] = "MimeType = " + myCodecs[i].MimeType;
myCodecInfo[(i * 10) + 8] = "Version = " +
myCodecs[i].Version.ToString();
myCodecInfo[(i * 10) + 9] = " ";
}
int numMyCodecInfo = myCodecInfo.GetLength(0);
// Render all of the information to the screen.
int j = 20;
for (i = 0; i < numMyCodecInfo; i++)
{
e.Graphics.DrawString(myCodecInfo[i],
font,
new SolidBrush(foreColor),
20,
j);
j += 12;
}
}
else
e.Graphics.DrawString("No Codecs Found",
font,
new SolidBrush(foreColor),
20,
20);
}
Private Sub GetImageDecodersExample(ByVal e As PaintEventArgs)
' Get an array of available decoders.
Dim myCodecs() As ImageCodecInfo
myCodecs = ImageCodecInfo.GetImageDecoders()
Dim numCodecs As Integer = myCodecs.GetLength(0)
' Set up display variables.
Dim foreColor As Color = Color.Black
Dim font As New Font("Arial", 8)
Dim i As Integer = 0
' Check to determine whether any codecs were found.
If numCodecs > 0 Then
' Set up an array to hold codec information. There are 9
' information elements plus 1 space for each codec, so 10 times
' the number of codecs found is allocated.
Dim myCodecInfo(numCodecs * 10) As String
' Write all the codec information to the array.
For i = 0 To numCodecs - 1
myCodecInfo((i * 10)) = "Codec Name = " + myCodecs(i).CodecName
myCodecInfo((i * 10 + 1)) = "Class ID = " + myCodecs(i).Clsid.ToString()
myCodecInfo((i * 10 + 2)) = "DLL Name = " + myCodecs(i).DllName
myCodecInfo((i * 10 + 3)) = "Filename Ext. = " + myCodecs(i).FilenameExtension
myCodecInfo((i * 10 + 4)) = "Flags = " + myCodecs(i).Flags.ToString()
myCodecInfo((i * 10 + 5)) = "Format Descrip. = " + myCodecs(i).FormatDescription
myCodecInfo((i * 10 + 6)) = "Format ID = " + myCodecs(i).FormatID.ToString()
myCodecInfo((i * 10 + 7)) = "MimeType = " + myCodecs(i).MimeType
myCodecInfo((i * 10 + 8)) = "Version = " + myCodecs(i).Version.ToString()
myCodecInfo((i * 10 + 9)) = " "
Next i
Dim numMyCodecInfo As Integer = myCodecInfo.GetLength(0)
' Render all of the information to the screen.
Dim j As Integer = 20
For i = 0 To numMyCodecInfo - 1
e.Graphics.DrawString(myCodecInfo(i), _
font, New SolidBrush(foreColor), 20, j)
j += 12
Next i
Else
e.Graphics.DrawString("No Codecs Found", _
font, New SolidBrush(foreColor), 20, 20)
End If
End Sub
Mengompilasi Kode
Contoh ini membutuhkan:
Aplikasi Formulir Windows.
A PaintEventArgs, yang merupakan parameter dari PaintEventHandler.
Baca juga
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