Question

我正在开发一个带有两个DropDown List的asp.net页面，从数据库中的同一个表中填充值，用户需要选择帐户名，我希望第二个DropDown List自动填充它自己的值（Acount Code））根据第一个下拉列表选择共享相同的帐户名称。这是我的示例代码......

\Browser Tests>protractor edge_conf
[13:32:48] I/launcher - Running 1 instances of WebDriver
[13:32:48] I/hosted - Using the selenium server at http://localhost:17556
[13:32:48] E/launcher - Unknown error
[13:32:48] E/launcher - WebDriverError: Unknown error
    at WebDriverError (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\selenium-webdriver\lib\error.js:27:5)
    at Object.checkLegacyResponse (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\selenium-webdriver\lib\error.js:505:15)
    at parseHttpResponse (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\selenium-webdriver\lib\http.js:509:13)
    at doSend.then.response (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\selenium-webdriver\lib\http.js:440:13)
    at process._tickCallback (internal/process/next_tick.js:109:7)
From: Task: WebDriver.createSession()
    at Function.createSession (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\selenium-webdriver\lib\webdriver.js:777:24)
    at createDriver (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\selenium-webdriver\index.js:167:33)
    at Builder.build (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\selenium-webdriver\index.js:632:14)
    at Hosted.getNewDriver (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\lib\driverProviders\driverProvider.ts:60:29)
    at Runner.createBrowser (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\lib\runner.ts:225:39)
    at q.then.then (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\lib\runner.ts:391:27)
    at _fulfilled (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\q\q.js:834:54)
    at self.promiseDispatch.done (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\q\q.js:863:30)
    at Promise.promise.promiseDispatch (C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\q\q.js:796:13)
    at C:\Users\jarlan\AppData\Roaming\npm\node_modules\protractor\node_modules\q\q.js:556:49
[13:32:48] E/launcher - Process exited with error code 199

我的C＃代码如下..

<span class="label">
  <asp:Label ID="Label2" runat="server" Text="Account Name"</asp:Label>
</span>
  <asp:DropDownList ID="name" runat="server"></asp:DropDownList><br />
<span class="label">
  <asp:Label ID="Label3" runat="server" Text="Account Code"></asp:Label>
</span>
<asp:DropDownList ID="code" runat="server"></asp:DropDownList>

在我的情况下，如果我更改帐户名称的值，帐户代码不会自动更改。我怎么能让这种情况发生..？谢谢

Answer 1

为了满足您的要求，您必须在第一个下拉列表中添加两个属性（1）＆＃34; AutoPostBack＆＃34;和（2）＆＃34; OnSelectedIndexChanged＆＃34;。

1）当你在下拉列表中选择一个项目时，Autopostback将导致回发。

2）OnSelectedIndexChanged是您必须编码以填充第二个下拉列表的事件。

<asp:DropDownList ID="name" runat="server" AutoPostBack="true" OnSelectedIndexChanged="name_SelectedIndexChanged"></asp:DropDownList>

如何根据asp.net中的选定文本框自动过滤DropDown列表值

1 个答案: