SImple Linq to reorder your columns as required

[OMKAR_KANADE]

SImple Linq to reorder your columns as required

Use Case Description

Introduction:
A developer needed to rearrange the column positions in a DataTable. How can this be achieved efficiently using LINQ without manually typing each column name, especially when dealing with many columns?

Input Columns Order:
{“PR Number”,“RFP Template”,“RFQ”,“Revenue/CAPEX”,“RFQ_SAP”,“Remark”}

Output Columns Order:
{“PR Number”, “RFQ”, “RFQ_SAP”, “Revenue/CAPEX”, “RFP Template”, “Remark”}

Input & Output are attached as Image!

Solution Overview:
You can use LINQ to reorder columns in a DataTable by specifying the desired column order in the ToTable method. This approach avoids the need for manual reordering in the DataTable object directly.

Solution:
Use LINQ to rearrange the columns by specifying the column names in the desired order within the ToTable method.

LINQ Query:
dt_Output = dt_Input.DefaultView.ToTable(False, {“PR Number”, “RFQ”, “RFQ_SAP”, “Revenue/CAPEX”, “RFP Template”, “Remark”})

• The False parameter indicates that we don’t want to distinct the output data.
• The array contains the column names in the desired order.

Extra Tip :
If you have many columns and don’t want to type each column name manually:

1. Open the sheet in Excel.
2. Click on any blank cell.
3. Enter the formula =A1:H1 (replace A1:H1 with your actual column header range).
4. Press Ctrl + Alt + f9(Key)
5. Press Enter to get a comma-separated list of all column names.

You will get a Collection of Column Names in that Cell.(Attached Screenshot)

Step-by-Step Explanation:

1. Rearrange Columns: The ToTable method is used with the DefaultView property of the DataTable to create a new DataTable with columns arranged as specified.
2. Avoiding Distinct: The False parameter ensures that no distinct operation is performed on the data.
3. Specifying Column Names: An array of column names is provided to define the new order of columns.

Conclusion:
By using this LINQ approach, you can efficiently rearrange the column positions in a DataTable without the need for complex loops or manual adjustments. This method ensures that your data structure aligns with your specific requirements, enhancing the ease of data handling and processing.

AS-IS WORKFLOW, TO-BE WORKFLOW

Other information about the use case

Industry categories for this use case: Healthcare Pharma

Skill level required: Advanced

UiPath Products that were used: UiPath Studio, UiPath Data Services, UiPath Orchestrator, UiPath StudioX

Other applications that were used: Excel

Other resources: -

What is the top ROI driver for this use case?: Accelerate growth and operational efficiency