ReportViewer Export To Excel- Merge cells

Any idea how can i force the merge of excel cells when exporting a rdlc report to excel?

Primary KEY |VALUES|

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PK1...............|val1.....|

.....................|val2......|

.....................|val3......|

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PK2 |..... |

.....................

i want that on first column(Primary key column) in the exported excel, the cells will be merged for each Primary Key

Thanks in advance

ps: sorry for that dots, didn't know how to force blanks开发者_JS百科 to be displayed

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The width of the PK1 column must be equal to the width of the PK2 column + the 2nd column in the report designer.