我選擇了包含相關主鍵的下拉列表項目後自動選擇覈對清單項目

Question

我需要ddlstore_selectedindexchange事件下的代碼幫助。我試圖讓員工和客戶清單自動檢查他們的外鍵ID是否等於商店主鍵ID。我無法弄清楚如何在IF語句中輸入內容。

protected void Page_Load(object sender, EventArgs e) 
{ 
    if (!Page.IsPostBack) 
    { 
     using (StuffContainer context = new StuffContainer()) 
     { 
      ddlstore.DataSource = context.Stores.ToList(); 
      ddlstore.DataTextField = "Name"; 
      ddlstore.DataValueField = "Id"; 
      ddlstore.DataBind(); 

      chkemp.DataSource = context.Customers.ToList(); 
      chkemp.DataTextField = "FName"; 
      chkemp.DataValueField = "Id"; 
      chkemp.DataBind(); 

      chkcust.DataSource = context.Employees.ToList(); 
      chkcust.DataTextField = "FName"; 
      chkcust.DataValueField = "Id"; 
     } 
    } 
} 

protected void ddlstore_SelectedIndexChanged(object sender, EventArgs e) 
{ 
    int storeId = int.Parse(ddlstore.SelectedValue); 

    using (StuffContainer context = new StuffContainer()) 
    { 
     List<Employee> employees = context.Employees.ToList(); 

     var employee = context.Employees.Where(x => x.StoreId == storeId); 

     foreach(Employee item in employees) 
     { 
      if() 
      { 

      } 
     } 
    } 
} 

Answer 1

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