[英]Enable/Disable a button
I have a button as follows: 我有一个按钮,如下所示:
RadButton lnkAdd = new RadButton();
lnkAdd.ID = "BtnAdd";
lnkAdd.CommandName = RadGrid.InitInsertCommandName;
lnkAdd.Text = "Add New Record";
lnkAdd.Style.Add("display", "none");
container.Controls.Add(lnkAdd);
I want to enable it on click of a row in the grid. 我想在网格中单击一行时启用它。 I have the following JavaScript to do this: 我有以下JavaScript可以做到这一点:
function OnRowSelected(sender, args) {
var clientDataKeyName = args.get_tableView().get_clientDataKeyNames()[0];
var clientDataKeyValue = args.get_tableView().get_selectedItems()[0].getDataKeyValue(clientDataKeyName);
var grid = args.get_tableView();
var linkButton1 = $telerik.findControl(grid.get_element(), "BtnAdd");
if (clientDataKeyValue == "Proposal") {
linkButton1.set_enabled(false);
}
else
linkButton1.set_enabled(true);
}
Though it reaches the linkButton1.set_enabled(true)
, the button is not enabled. 尽管到达linkButton1.set_enabled(true)
,但该按钮未启用。 I also tried the following to enable the button linkButton1.style.display = "block";
我还尝试了以下操作来启用按钮linkButton1.style.display = "block";
But this throws an error: 但这会引发错误:
SCRIPT5007: Unable to set property 'display' of undefined or null reference. SCRIPT5007:无法设置未定义或空引用的属性“显示”。
Though it finds the button, style is rendered as undefined. 尽管找到了按钮,但样式仍呈现为未定义。
由于仅通过按钮的显示CSS属性隐藏了按钮的主要包装元素,因此应使用相同的内容再次显示该按钮:
linkButton1.get_element().style.display="inline-block";
Any UIControl (including RadioButtons) can be enabled and disabled using the IsEnabled property. 可以使用IsEnabled属性启用和禁用任何UIControl(包括RadioButtons)。 Basically, you can just set the button to 基本上,您可以将按钮设置为
linkButton1.IsEnabled = false;
In order to disable the button and 为了禁用按钮和
linkButton1.IsEnabled = true;
to reenable it. 重新启用它。 Hope that helps. 希望能有所帮助。
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