DevExpress GridControl圖像列顯示類似System.Byte []的圖像

Question

我有一個人員數據的表格，名稱，姓氏，代碼和人物照片。 當我從表中選擇人員並將結果發送到DevExpress GridControl時，它會顯示Name，Surname和Code列。 但Photo列顯示所有行中的System.Byte []值。 問題是什么。

Answer 1

您應該為列的ColumnEdit屬性分配一個RepositoryItemPictureEdit實例。 在這種情況下，XtraGrid將能夠在網格中顯示圖像。

示例： 如何在GridControl中顯示圖像

相關鏈接：

1. 存儲庫和存儲庫項
2. 就地編輯概述

Answer 2

***字節轉換為圖像

           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);