On selection of one row disable the other rows in grid based on the status

Have a look at the parameter "disableRowSelectionWhen"

docs.appian.com/.../Paging_Grid_Component.html

I have tried on this parameter but could not able achieve could you please help me with sample code

The way I have tried : 

disableRowSelectionWhen : if(
            a!isNullOrEmpty(local!selected),
            {},
            index(local!selectedRows, "workflowStatus", {}) <> index(fv!row, "workflowStatus", {})
          )

For suppose I have 7 rows with 2 drafts status & 3 completed status,2 Review status.Now if I select one draft status remaining 5 of other status getting disabled and after I select the 2 draft status row then the entire grid rows were getting disabled with two draft status selected.Is there any way to stop after selecting all the available draft status rows.

The compare operator does not make much sense. Comparing a list to a single value returns a list of true/false values which you then feed into that parameter.

I understand your explanation a bit different. As soon as a single row is selected, only rows with the same status should stay selectable. If this is the case, I think working code might look like this:

contains(index(local!selectedRows, "workflowStatus", {}), index(fv!row, "workflowStatus", {}))

Hey hemap0003 , as Stefan suggested since it is a list you can use contains or index the first selected row.

Try this.

a!localVariables(
  local!selectedRows,
  local!workflowStatus: {
    { workflowStatus: "Draft" },
    { workflowStatus: "Draft" },
    { workflowStatus: "Completed" },
    { workflowStatus: "Completed" },
    { workflowStatus: "Completed" },
    { workflowStatus: "Review" },
    { workflowStatus: "Review" },
    { workflowStatus: "Review" }
  },
  {
    a!gridField(
      selectable: true,
      data: local!workflowStatus,
      selectionValue: local!selectedRows,
      selectionSaveInto: {
        local!selectedRows,
        /* if the user clicked on all select checkbox, we can't hide this but you can add custom checkbox field in place of grid field checkbox if it is somewhat not performant */
        a!save(
          local!selectedRows,
          a!forEach(
            items: local!selectedRows,
            expression: if(
              a!isNullOrEmpty(local!selectedRows),
              {},
              if(
                index(
                  index(
                    index(
                      local!workflowStatus,
                      local!selectedRows,
                      {}
                    ),
                    "workflowStatus",
                    {}
                  ),
                  1,
                  {}
                ) <> index(
                  index(local!workflowStatus, fv!item, {}),
                  "workflowStatus",
                  {}
                ),
                {},
                fv!item
              )
            )
          )
        )
      },
      disableRowSelectionWhen: if(
        a!isNullOrEmpty(local!selectedRows),
        {},
        index(
          index(
            index(
              local!workflowStatus,
              local!selectedRows,
              {}
            ),
            "workflowStatus",
            {}
          ),
          1,
          {}
        ) <> index(fv!row, "workflowStatus", {})
      ),
      columns: {
        a!gridColumn(
          label: "Status",
          value: fv!row.workflowStatus
        )
      }
    )
  }
)

 This worked excellant.Thanks Stefan but now the requirement changed as if user select "Draft" or  "Draft Review" then the rows with these status can be enabled and other status(Complete & Cancelled) should be disabled or vice versa.

 This worked excellant.Thanks Stefan but now the requirement changed as if user select "Draft" or  "Draft Review" then the rows with these status can be enabled and other status(Complete & Cancelled) should be disabled or vice versa.