getproperty

getPropertyValue(“backgroundColor”) returns an empty string

由 瘦欲@ 提交于 2021-01-28 10:21:02
问题 This is my problem: var mycss = window.getComputedStyle(myelement); returns a CSSStyleDeclaration object: CSSStyleDeclaration {0: "animation-delay",..., backgroundColor: "rgb(0, 0, 0)",...} Then, I want to get the background color, but mycss.getPropertyValue("backgroundColor"); returns an empty string "" ! Why?? 回答1: Within your CSSStyleDeclaration, you need to change 'backgroundColor' to 'background-color' and then call mycss.getPropertyValue('background-color') An example: HTML: <head>

getPropertyValue(“backgroundColor”) returns an empty string

由 青春壹個敷衍的年華 提交于 2021-01-28 10:20:45
问题 This is my problem: var mycss = window.getComputedStyle(myelement); returns a CSSStyleDeclaration object: CSSStyleDeclaration {0: "animation-delay",..., backgroundColor: "rgb(0, 0, 0)",...} Then, I want to get the background color, but mycss.getPropertyValue("backgroundColor"); returns an empty string "" ! Why?? 回答1: Within your CSSStyleDeclaration, you need to change 'backgroundColor' to 'background-color' and then call mycss.getPropertyValue('background-color') An example: HTML: <head>

How does adb shell getprop and setprop work?

由 痞子三分冷 提交于 2019-12-21 09:27:22
问题 I would like to understand how adb shell setprop mypropertykey mypropertyvalue works. In other words, I edited the /system/build.prop file, but when I try to use getprop command to read the value back I seem to be getting a blank value instead. However, when I set the property via adb shell setprop in the root mode and then unroot the emulator and read the value using code, I am able to get the proper value. What I don't understand is, if the value is set via adb shell setprop then why does

how to retrieve nested properties in groovy

由 家住魔仙堡 提交于 2019-12-18 19:45:12
问题 I'm wondering what is the best way to retrieve nested properties in Groovy, taking a given Object and arbitrary "property" String. I would like to something like this: someGroovyObject.getProperty("property1.property2") I've had a hard time finding an example of others wanting to do this, so maybe I'm not understanding some basic Groovy concept. It seems like there must be some elegant way to do this. As reference, there is a feature in Wicket that is exactly what I'm looking for, called the

C# “Object reference not set to an instance of an object” Get Type / Get Property [duplicate]

由 China☆狼群 提交于 2019-12-12 03:37:44
问题 This question already has answers here : What is a NullReferenceException, and how do I fix it? (29 answers) Closed 3 years ago . Hi guys I'm receiving an error: "Object reference not set to an instance of an object". I'm not quite sure why... Here's the code: public void LoadUserContacts(ListBox FriendsLb) { FriendsLb.DisplayMember = "Display"; var query = from o in Globals.DB.Friends where o.UserEmail == Properties.Settings.Default.Email select new { FirstName = o.FirstName, LastName = o

Using prepared statement in Groovy

由 和自甴很熟 提交于 2019-12-08 13:59:50
问题 this is for testing purposes (automatic testing) SoapUI def status = testRunner.testCase.getPropertyValue( "Status" ) def grid = testRunner.testCase.getPropertyValue( "Grid" )+"_V" def grid1 if (["TABLE1","TABLE2"].contains(grid)) grid1 ="HUBCFG."+grid else grid1 = "SDM."+grid Option1 sql.executeUpdate "UPDATE " +grid1+" t0 set XXX='$status' WHERE t0.YYY='$grid'" Option2 String bql = "UPDATE $grid1 t0 set XXX='$status' WHERE t0.YYY='$grid'" sql.executeUpdate bql sql.commit() log.info(

How does adb shell getprop and setprop work?

由 前提是你 提交于 2019-12-04 04:40:42
I would like to understand how adb shell setprop mypropertykey mypropertyvalue works. In other words, I edited the /system/build.prop file, but when I try to use getprop command to read the value back I seem to be getting a blank value instead. However, when I set the property via adb shell setprop in the root mode and then unroot the emulator and read the value using code, I am able to get the proper value. What I don't understand is, if the value is set via adb shell setprop then why does it not get written to the build.prop file? Then where does getprop read the values from? Android system

Convert to a Type on the fly in C#.NET

由 ぃ、小莉子 提交于 2019-12-03 18:44:11
问题 I want to to convert an Object to a type that will be assigned at runtime. For example, assume that I have a function that assigns a string value(from a TextBox or Dropdownlist ) to an Object.Property . How would I convert the value to proper type? For instance, it could be an integer, string, or enum. Public void Foo(object obj,string propertyName,object value) { //Getting type of the property og object. Type t= obj.GetType().GetProperty(propName).PropertyType; //Now Setting the property to

Getting the attached property “Canvas.Left”

由 浪尽此生 提交于 2019-12-02 09:39:41
问题 I have the following code: this.Object.GetType().GetProperty(this.PropertyName).GetValue(this.Object, null); PropertyName is a string, containing the name of the property I want to get. This works fine for "normal" properties, but I can't get the "Canvas.LeftProperty" or "Canvas.TopProperty". Can anyone help me out? Thanks, Chris 回答1: I think this is because Canvas.Left is attached property and to retrieve them try this: private DependencyProperty GetAttachedProperty(DependencyObject obj,

Getting the attached property “Canvas.Left”

由 萝らか妹 提交于 2019-12-02 07:11:14
I have the following code: this.Object.GetType().GetProperty(this.PropertyName).GetValue(this.Object, null); PropertyName is a string, containing the name of the property I want to get. This works fine for "normal" properties, but I can't get the "Canvas.LeftProperty" or "Canvas.TopProperty". Can anyone help me out? Thanks, Chris I think this is because Canvas.Left is attached property and to retrieve them try this: private DependencyProperty GetAttachedProperty(DependencyObject obj, string propertyName, Type ownerType) { foreach (PropertyDescriptor pd in TypeDescriptor.GetProperties(obj, new
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