Web API參數過濾

Question

這一定很簡單，我非常密集，但我找不到一個例子來幫助我弄清楚。我想篩選我的tblAsset項目的列表，其assessmentId通過參數傳入。我能夠得到參數值好，但我不知道如何編寫查詢。

我的模型是使用模型創建嚮導從現有數據庫構建的。

感謝您的幫助！

public IEnumerable<tblAsset> GettblAssets() 
{ 
    NameValueCollection nvc = HttpUtility.ParseQueryString(Request.RequestUri.Query); 
    var assessmentId = nvc["aid"]; 

    //limit the assets by assessmentId somehow and return 
} 

Answer 1

你可以使用.Where擴展方法由數據庫返回的IQueryable<tblAsset>比如：你的問題的

public IEnumerable<tblAsset> GettblAssets() 
{ 
    NameValueCollection nvc = HttpUtility.ParseQueryString(Request.RequestUri.Query); 
    var assessmentId = nvc["aid"]; 

    // TODO: you might need to adjust the property names of your model accordingly 
    // Also if the assessmentId property is an integer on your model type 
    // you will need to parse the value you read from the request to an integer 
    // using the int.Parse method 
    return db.tblAsset.Where(a => a.assessmentId == assessmentId); 
}