Get child permissions by parent instead name.

modules/permission-management/src/Volo.Abp.PermissionManagement.Blazor/Components/PermissionManagementModal.razor.cs

@@ -207,7 +207,7 @@ public partial class PermissionManagementModal
         {
             SetParentPermissionGrant(permissionGroup, permission);
         }
-        else if (value == false)
+        else
         {
             var childPermissions = GetChildPermissions(permissionGroup, permission);
 
@@ -260,7 +260,25 @@ public partial class PermissionManagementModal
 
     protected List<PermissionGrantInfoDto> GetChildPermissions(PermissionGroupDto permissionGroup, PermissionGrantInfoDto permission)
     {
-        return permissionGroup.Permissions.Where(x => x.Name.StartsWith(permission.Name)).ToList();
+        var childPermissions = new List<PermissionGrantInfoDto>();
+        GetChildPermissions(childPermissions, permissionGroup.Permissions, permission);
+        return childPermissions;
+    }
+
+    protected void GetChildPermissions(List<PermissionGrantInfoDto> allChildPermissions, List<PermissionGrantInfoDto> permissions, PermissionGrantInfoDto permission)
+    {
+        var childPermissions = permissions.Where(x => x.ParentName == permission.Name).ToList();
+        if (childPermissions.Count == 0)
+        {
+            return;
+        }
+
+        allChildPermissions.AddRange(childPermissions);
+
+        foreach (var childPermission in childPermissions)
+        {
+            GetChildPermissions(allChildPermissions, permissions, childPermission);
+        }
     }
 
     protected bool IsDisabledPermission(PermissionGrantInfoDto permissionGrantInfo)