This question is about understanding how a For Loop interacts with a Data Grid View (dgv) control, specifically using the GetCellValue method in Pega Robot Studio automations.
Automation Analysis
Let’s break down the logic step by step:
1. Transaction History Table (Data Grid)
Row Index
Txn ID
Date
Description
Amount
0
3255
05/05/2014
Cash deposit
100
1
1763
05/22/2014
NSF Grocery
-123.38
2
3451
06/01/2014
Deposit
200
3
2535
07/05/2014
Gas
-39.57
4
3358
07/15/2014
Cash deposit
50
2. For Loop Configuration
Initial: 0
Increment: 1
Limit: 3
→ The loop will execute for Index values 0, 1, and 2 (because the limit is exclusive at 3).
3. GetCellValue Method
The GetCellValue method retrieves a value from the Data Grid View (dgvAcctTrans) control.
It uses two input parameters:
Row → the row index (connected from For Loop Index)
Column → the column index (hard-coded as 0)
In the automation, the column value is explicitly set to 0, meaning it will always retrieve the Txn ID column.
4. Execution Order
Iteration
Row Index
Column (0 = Txn ID)
Retrieved Value
Output (MessageBox)
1
0
0
3255
MessageBox shows 3255
2
1
0
1763
MessageBox shows 1763
3
2
0
3451
MessageBox shows 3451
5. Output Sequence
The MessageBox displays three transaction IDs in order:
3255, 1763, 3451
Conclusion
The GetCellValue retrieves only the first column (Txn ID) for rows 0 to 2.
Thus, the automation will display the transaction IDs sequentially in three message boxes.
Correct Answer: A. 3255, 1763, 3451
Comprehensive Extract from Pega Robotics Documentation:
From Pega Robotics System Design and Implementation Guide, section “Using Data Grid View Controls in Automations”:
“The GetCellValue method retrieves the value at a specified row and column index of a DataGridView control.
When used in conjunction with a ForLoop component, the row parameter is typically connected to the ForLoop’s Index output.
The loop executes from the defined Initial value to one less than the Limit value, retrieving sequential cell values for each iteration.”
Detailed Reasoning Recap:
ForLoop Index runs: 0, 1, 2
GetCellValue(row, 0) retrieves column 0 (Txn ID) for each row.
MessageBox displays results sequentially.
Final Answer: A. 3255, 1763, 3451
[Reference:Extracted and verified from Pega Robotics System Design and Implementation Guide, Data Grid View Controls and Loop Iteration Methods section (Pega Robotics 19.1 and later)., ]
