How to set RowFilter case-insensitive for DataView

Question

I have a datagrid, its datasource is a dataview. There is a textbox with which users can type in filter text. I want to make the filter to be case insensitive. say, the typed text is "Tg"

I tried this

Mydataview.RowFilter = "UPPER(COL) LIKE '%TG%'"

but this gives me an invalidoperation exception

then I changed it to

Mydataview.RowFilter = "COL LIKE '%tg%' or COL LIKE '%TG%'"

This works but it does not cover all cases. Eg If a row is "Tg", it will be filtered out which is not desirable. What I want, when users type "Tg", it will match any data with tg, Tg, TG, tG, all the combination

thanks

Answer 1

RowFilter obeys dataset CaseSensitive value

So do this in your Form_Load method:

CaseSensitive is set to False by default

mydataset.CaseSensitive = false

Proof of concept:

Answer 2

选择名称两次，其中一个名为upper（name）作为finder，然后使用该列（不可见）过滤行

Answer 3

What if you have several columns that might be filtered? Use the option stated in the accepted answer.