how to calculate the textbock height and width in on load if i create textblock from code?

问题

TextBlock tbl= new TextBlock();
tbl.text="Kishore";

double x=tbl.ActualHeight;
double y=tbl.ActualWidth;

If i execute the code from the loaded event in Metro - winRT will return 0 for both.

How can I get the ActualWidth in the Loaded or SizeChanged event?

回答1:

Call Measure() then Arrange() and then ActualWidth and ActualHeight will be updated.

回答2:

Can also do this via

UpdateLayout();
testBlock.ActualWidth

This could be useful when calculating multiple objects heights and widths.

回答3:

TextBlock tbl = new TextBlock();
tbl.Text = "Kishore";

tbl.Measure(new Size(0, 0));

double x = tbl.ActualHeight;

来源：https://stackoverflow.com/questions/10556019/how-to-calculate-the-textbock-height-and-width-in-on-load-if-i-create-textblock