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how to highlight multiple duplicated fields in datagrid

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hi everyone, I have an interesting question to ask. I had created a datagrid to display the data from a .xls file. I want to highlight the rows which has the first three fields are the same. for example:
ID BLOCK TEST VALUE
1 1 1 23.2
2 1 3 34.5
3 4 6 56.7
2 1 3 87.56

Rows 2 and 4 have the same values for the first three field. I want to highlight both of them so user can select to delete one. Any idea?
Apr 10 '07 #1
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