当按下enter时，UpdatePanel不会触发-UpdatePaneldoesn'ttriggerwhenenterispressed

3  

Setting a single button on a panel as a default is always a bit tricky. I've kept a method in a common library around for just this issue:

将面板上的单个按钮设置为默认设置总是有点棘手。为了这个问题，我在公共库中保存了一个方法:

public static void EnterOnKeyDown(WebControl targetControl, WebControl controlToPress)
{
    targetControl.Attributes.Add("onkeydown",
        "if(event.which || event.keyCode){if ((event.which == 13)" +
        "|| (event.keyCode == 13)) {document.getElementById('" +
        controlToPress.ClientID + "').click();return false;}} else {return true};");
}

You can place this method anywhere you like and call it as follows:

您可以将此方法放置在任何您喜欢的位置，并将其命名为:

EnterOnKeyDown(someTextBoxInYourPanel, yourSubmitButton);

You could just as easily use the Javascript above on its own without setting it in a static method.

您可以轻松地使用上面的Javascript，而无需将其设置为静态方法。

0  

In the UpdatePanel properties, set the following:

在UpdatePanel属性中，设置以下内容:

ChildrenAsTriggers = True UpdateMode = Always

ChildrenAsTriggers = True UpdateMode = Always

If you do this, you don't have to specify when to trigger the update panel, it will automatically be triggered when any of your controls causes a postback.

如果这样做，您不必指定何时触发更新面板，当您的任何控件引起回发时，将自动触发更新面板。