How to display Sr. No

For Displaying a serial number (Sr. No) in your Angular table, you need to add an additional column for the serial numbers. Here’s how you can modify your existing code to achieve this:

1. Define a new column for the serial numbers.
2. Update the template to include this new column.

-----------------------<><><><><><>-----------------------------------

  Sr. No
 
    {{ i + 1 }}
 

 
   
     
       

       
     
     
       
          {{ element[item.name] }}
       
     
   
 

------------------------------<><><><><><><>------------------------------------------------------------

1. Serial Number Column Definition:

   • A new is added specifically for the serial number column.
   • The header cell () is defined to display "Sr. No".
   • The data cell () uses the index (i) provided by the *matCellDef directive to show the serial number. Since index starts at 0, i + 1 is used to display 1-based serial numbers.

2. Existing Columns:

   • The existing columns are iterated over using *ngFor="let item of columns".
   • For each column, a check is done to see if it is visible (*ngIf="item.visible").
   • The column definition ([matColumnDef]="item.name") and corresponding header and data cells are set up accordingly.
   • The data cells conditionally render content based on the column name (item.name).

3. Combining Serial Number Column with Other Columns:

   • The serial number column is defined at the beginning, outside the loop over columns.
   • The rest of the columns are defined inside the loop as usual.

By adding this new column, your table will now include a serial number for each row, starting from 1 and incrementing by 1 for each subsequent row. Hope it helps!!