the groupby column is alway fixed. and i want it not fixed.
i trie to make the fixed FixedColumnSettings.AllowFixedColumns propery is disabled but it didn't work.
also tried to make the column's isFixed property is not fixed. also it didn't work.
how can i make the column (isgroupby = true) not fixed.
You should be using the xamDataGrid instead. It will behave as you want. In the xamDataGrid, grouping and merged cells are two different concepts that exist independently.
How to merge cells in XamDataGrid?
I can't find samples or docs.
You and find more on Cell Merging in the WPF Documentation.
But I'm using 2017.1 version, there isn't MergedCellMode property in xamdatagrid.
Is it impossible to merge cells in 2017.1 version ?
XamDataGrid’s Cell Merging feature is available from 2018.1. Unfortunatelly, the feature is not available on 2017.1.