Background:
When you try to show the running total in the GroupHeader, the first value always in the Group Header shows the 0 value. To achieve the desired behavior, you can follow the below steps
Steps to Complete:
1. Drop a TextBox control in the GroupHeader section and set its properties like this
1. DataField: (The name of the field you want to summarize)
2. SummaryFunc: Sum
3. SummaryGroup: (The name of the GroupHeader section to group)
4. SummaryRunning: None
5. SummaryType: SubTotal
Mohit Garg