如何访问我的公共方法从后面的aspx代码到公共类？

Question

我有一个公共方法在我的aspx代码后面调用PhotoDatabinding，它的作用是将数据库绑定到List视图控件。

public void PhotoDatabinding() 
{ 


lnqPhotoDataContext dbCon = new lnqPhotoDataContext(); 
var res = from p in dbCon.Photos orderby p.PhotoID descending select new {   p.PhotoID, p.FileName }; 

    lvSubAlbumDB.DataSource = res; 
    lvSubAlbumDB.DataBind(); 

} 

现在，在我的公共类中称为Process我有一个名为UpdateSave的方法。我的问题是我怎么能访问PhotoBinding方法，让它看起来像这样

public class Process 
{ 
public UpdateSave() 
{ 
    ....some code 
    PhotoDatabinding(); 

} 

} 

感谢，并感谢所有您的帮助和建议。

Answer 1

要清除流量：

您需要创建将是只用于从数据库获取数据或更新数据

public class PhotoAccess 
{ 

    public class PhotoInfo 
    { 
    public int PhotoID {get; set;} 
    public string FileName {get; set;} 
    } 

    public IEnumerable<PhotoInfo> GetPhotos() 
    { 
    using (var dbCon = new lnqPhotoDataContext()) 
    { 
     var res = from p in dbCon.Photos 
      orderby p.PhotoID descending 
      select new PhotoInfo 
         { 
          p.PhotoID, 
          p.FileName 
         }; 
     return res.AsEnumerable(); 
    } 
    } 
    public bool UpdateSave(...) 
    { 
     ... code to do update or save, use here only classes for working with the DB 
    } 
} 

在后面的代码

然后，类

页

protected void Page_Load(object sender, EventArgs e) 
{ 
    if (!Page.IsPostBack) 
    { 
     var dataAccess = new PhotoAccess(); 
     var items = dataAccess.GetPhotos(); 

     lvSubAlbumDB.DataSource = items; 
     lvSubAlbumDB.DataBind(); 
    } 
} 
protected void btSave_OnClick(object sender, EventArgs e) 
{ 
    var dataAccess = new PhotoAccess(); 
    dataAccess.UpdateSave(...pass here the parameters or an object which is going to be inserted); 

    var items = dataAccess.GetPhotos(); 

    lvSubAlbumDB.DataSource = items; 
    lvSubAlbumDB.DataBind(); 
} 

您也可以重构绑定代码到Page类的另一种方法

private void BindAlbum() 
{ 
    var dataAccess = new PhotoAccess(); 
    var items = dataAccess.GetPhotos();  

    lvSubAlbumDB.DataSource = items; 
    lvSubAlbumDB.DataBind(); 
} 

而且页面加载是：

protected void Page_Load(object sender, EventArgs e) 
    { 
     if (!Page.IsPostBack) 
     { 
      BindAlbum(); 
     } 
    } 

和更新处理

protected void btSave_OnClick(object sender, EventArgs e) 
    { 
     var dataAccess = new PhotoAccess(); 
     dataAccess.UpdateSave(...pass here the parameters or an object which is going to be inserted); 

     BindAlbum(); 
    }