DecodeImage メソッド (FormattedTextEditInfo)

画像に EncodeImage を使用してエンコードした指定画像をデコードします。

シンタックス

Visual Basic

'宣言
 
Public Function DecodeImage( _
   ByVal imageData As String _
) As Image

C#

public Image DecodeImage( 
   string imageData
)

パラメータ

imageData

EncodeImage への呼び出しによって返される文字列。

戻り値の型

デコードされた System.Drawing.Image。

解説

詳細は EncodeImage を参照してください。

使用例

Visual Basic

Imports Infragistics.Shared
Imports Infragistics.Win
Imports Infragistics.Win.Misc
Imports Infragistics.Win.FormattedLinkLabel

    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles button1.Click
        Dim editInfo As FormattedTextEditInfo = Me.UltraFormattedTextEditor1.EditInfo

        editInfo.SelectionStart = 0
        editInfo.SelectionLength = 0

        Dim imagePath As String = "test.bmp"

        ' Insert an image using 'src' attribute. The formatted text value doesn't actually
        ' contain the image data. It stores an URL from which it retrieves the image.
        ' This means that the image must exist at the specified path when the application
        ' is run. Note that you can specify BaseURL property to specify relative paths
        ' for images.
        editInfo.InsertValue("Referenced Image: <br/> <img src=""" & imagePath + """ width=""50"" height=""50"" /> <br/>")

        ' Create an Image instance from the file.
        Dim img As Image = Image.FromFile(imagePath)

        ' Encode it into a string that's suitable for embedding in the formatted text. 
        ' Use the EncodeImage method to accomplish that.
        Dim imgAsEncodedString As String = editInfo.EncodeImage(img)

        ' Insert the image with image data embedded inside the formated text. Notice the
        ' 'data' attribute of 'img' tag. To specify embedded image data, you use the 'data'
        ' attribute instead of te 'src' attribute.
        editInfo.InsertValue("Embedded Image: <br/> <img data=""" & imgAsEncodedString + """ width=""50"" height=""50"" /> <br/>")

        ' Print out the formatted text value. Notice the embedded image data in the output.
        Debug.WriteLine("Formatted Text: " & Me.UltraFormattedTextEditor1.Value.ToString())

        ' You can use the DecodeImage to decode an image that was encoded using EncodeImage
        ' method.
        Dim decodedImage As Image = editInfo.DecodeImage(imgAsEncodedString)
    End Sub

C#

using Infragistics.Shared;
using Infragistics.Win;
using Infragistics.Win.Misc;
using Infragistics.Win.FormattedLinkLabel;
using System.Diagnostics;


		private void button1_Click(object sender, System.EventArgs e)
		{
			FormattedTextEditInfo editInfo = this.ultraFormattedTextEditor1.EditInfo;

			editInfo.SelectionStart = 0;
			editInfo.SelectionLength = 0;

			string imagePath = "test.bmp";

			// Insert an image using 'src' attribute. The formatted text value doesn't actually
			// contain the image data. It stores an URL from which it retrieves the image.
			// This means that the image must exist at the specified path when the application
			// is run. Note that you can specify BaseURL property to specify relative paths
			// for images.
			editInfo.InsertValue( @"Referenced Image: <br/> <img src=""" + imagePath + @""" width=""50"" height=""50"" /> <br/>" );

			// Create an Image instance from the file.
			Image img = Image.FromFile( imagePath );

			// Encode it into a string that's suitable for embedding in the formatted text. 
			// Use the EncodeImage method to accomplish that.
			string imgAsEncodedString = editInfo.EncodeImage( img );

			// Insert the image with image data embedded inside the formated text. Notice the
			// 'data' attribute of 'img' tag. To specify embedded image data, you use the 'data'
			// attribute instead of te 'src' attribute.
			editInfo.InsertValue( @"Embedded Image: <br/> <img data=""" + imgAsEncodedString + @""" width=""50"" height=""50"" /> <br/>" );

			// Print out the formatted text value. Notice the embedded image data in the output.
			Debug.WriteLine( "Formatted Text: " + this.ultraFormattedTextEditor1.Value.ToString( ) );

			// You can use the DecodeImage to decode an image that was encoded using EncodeImage
			// method.
			Image decodedImage = editInfo.DecodeImage( imgAsEncodedString );
		}