如何使用xamarin Android的web服務和顯示在列表視圖

Question

如何使用xamarin Android的web服務和顯示在列表視圖

Answer 1

我會強烈建議不要存儲在視頻保存在數據庫的SQL Server的視頻保存在數據庫的SQL Server視頻你的數據庫是由於以下原因：

1). Doing so would bloat your database size 
2). Slow down the performance of the database 
3). It opens your application to Denial of Service attacks (DDOS). 

你應該期待中的文件存儲的專用存儲您的視頻，如：

1). Cloud Storage. 
2). FTP storage. 
3). Server's file system. 
4). Etc... 

若y ou確實希望將視頻存儲在數據庫中以便進行測試或基準測試目的，您可以嘗試以下代碼：

using System; 
using System.Data; 
using System.Data.SqlClient; 

namespace Portal.WebApp.Models 
{ 
    public class DbBlobSaver 
    { 
     #region Public Methods 
     public void Execute(byte[] fileBytes) 
     { 
      using (var dbConnection = new SqlConnection("Data Source = .; Initial Catalog = BlobsDatabase; Integrated Security = SSPI")) 
      { 
       var command = BuildCommand(dbConnection); 
       var blobParameter = BuildParameter(fileBytes); 

       command.Parameters.Add(blobParameter); 

       try 
       { 
        command.Connection.Open(); 
        command.ExecuteNonQuery(); 
       } 
       catch (Exception ex) 
       { 
        // Log errors here 
       } 
       finally 
       { 
        command.Connection.Close(); 
       } 
      } 
     } 
     #endregion 

     #region Private Methods 
     private SqlParameter BuildParameter(byte[] fileBytes) 
     { 
      var blobParameter = new SqlParameter("@BlobFile", SqlDbType.Binary); 

      blobParameter.Value = fileBytes; 

      return blobParameter; 
     } 

     private SqlCommand BuildCommand(SqlConnection connection) 
     { 
      var command = new SqlCommand(); 
      command.Connection = connection; 
      command.CommandType = CommandType.Text; 
      command.CommandText = "INSERT INTO BlobsTable(BlobFile)" + "VALUES (@BlobFile)"; 

      return command; 
     } 
     #endregion 
    } 
}