Question

我有一段时间在VB.Net中构建查询。 “Item”是我的解析类 “PLUNmbr”是该类

中的字符串列

Private Async Sub btnSyncToCloud_Click(sender As Object, e As EventArgs) Handles btnSyncToCloud.Click

Dim qItem As New ParseQuery(Of ParseObject)("Item")
qItem.WhereEqualTo("PLUNmbr", "0002")
Dim obj As Parse.ParseObject = Await qItem.FirstAsync

Debug.Print("PLUNmbr = " & obj("PLUNmbr").Value.ToString.Trim)
//This always prints out "0001" - which happens to be the first record in the class.
//No matter how I set the criteria - 0001 comes back.

end sub

Answer 1

该行：

qItem.WhereEqualTo("PLUNmbr", "0002")

不修改 qItem，它只返回添加了过滤器的新实例。您需要将代码更改为：

qItem = qItem.WhereEqualTo("PLUNmbr", "0002")

我想你也可以这样做：

Dim qItem As New ParseQuery(Of ParseObject)("Item")
Dim obj As Parse.ParseObject = Await qItem.WhereEqualTo("PLUNmbr", "0002").FirstAsync

如何用VB.net查询parse.com？

1 个答案: