How to delete a row from Grid in WPF

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I have a strange problem as follow:

seleted is a control in Grid;

the code like this:
int selectedColumnNumber = Grid.GetRow(selected);

but when I want to delete this Row using the code:

grid.RowDefinitions.RemoveAt(selectedColumnNumber);

it always delete the last row. I know when i delete a row I should redefinnition the RowDefinition,

the first time using this code, it still delete the last Row.

any help will be grateful!!

Posted 15-May-13 1:53am

Leslieytx

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Leslieytx 15-May-13 7:53am

Also I delete the child in this Row

Irina Pykhova 15-May-13 9:45am

did you check, what value you get in Grid.GetRow? I.e. try something more simple, grid.RowDefinitions.RemoveAt(1) - does it work?

Leslieytx 15-May-13 11:38am

Thanks for your reply
yes, I set a breakpoint to check the value Grid.GetRow, it is right number. but it delete a wrong row. the code grid.RowDefinitions.RemoveAt(1) delete the last row, even I set any other number in .RemoveAt(i),like .RemoveAt(0), it also delete the last number like number 4.

3 solutions

Solution 1

check this links
delete row from datagrid[^]

delete a row from datagrid-wpf[^]

Posted 15-May-13 2:03am

josh-jw

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Leslieytx 15-May-13 11:18am

Thank for your reply and I've checked these two article. But they ware different. what I mean is a Grid control in WPf not a DataGrid.

Leslieytx 15-May-13 11:34am

Take instance:
here is a Grid, 3 Rows, 3 Columns. The row with row number 0, column number 1 cross two columns,(columnSpan = 2), the first column's rowSpan is 3. the third row also cross two columns(columnSpan =2), the second row has two column( (Grid.row = 1.,column =1),(row=1, column=2)).Now I want to delete the row with row number 0(cross two column), and the column with column number 0(cross three rows). when I delete row, it always delete a wrong row

Solution 3

every time remove a row , you should remove the rowdefinition and all children in this row. and then re-compute every row percent and redefine the whole rwodefinition, then add the other children

Posted 29-May-13 17:39pm

Leslieytx

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Leslieytx · Accepted Answer · 2013-05-15T22:30:00

Solution 2

Every time you remove a rowdefinition, you need to delete every control in this row and redefine the whole rowdefiniton.

Posted 15-May-13 22:30pm

Leslieytx