的DevExpress GridControl圖像列中顯示喜歡的圖像System.Byte []

Question

我有人數據其是名字，姓氏，編碼和人的照片的表。當我從表中選擇的人喜歡和結果發送到DevExpress的GridControl它顯示名字，姓氏和代碼列。但Photo列在所有行中顯示System.Byte []值。問題是什麼。

Answer 1

你應該列的ColumnEdit財產與RepositoryItemPictureEdit的實例分配。在這種情況下，XtraGrid中就能顯示在網格中的圖像。

樣品：How to display an image in GridControl

相關鏈接：

1. Repositories and Repository Items
2. Inplace Editors Overview

Answer 2

***字節轉換爲圖像

  data.Read(); 

      //get the value of the size field in the current row and store it in filesize 

      int fileSize = data.GetInt32(data.GetOrdinal("size")); 

      //get the value of the name field in the current row and store it in filesize 

      string name = data.GetString(data.GetOrdinal("name")); 

      //Create a byte array to read the file in the row which is in bytes 

      byte[] rawData = new byte[fileSize]; 

      //Read the bytes and store it in the array 

      data.GetBytes(data.GetOrdinal("file"), 0, rawData, 0, fileSize); 

      //Create the file from the byte array which is read from the database 

      FileStream fs = new FileStream(name, FileMode.Create, FileAccess.Write); 

      fs.Write(rawData, 0, fileSize); 

      //closing the file stream 

      fs.Close(); 

      //Showing the image that is just retreived in te picturebox picDB 

      picDB.BackgroundImage = new Bitmap(name);