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The Priority parameter sets the message to High priority. The Attachments parameter specifies the file in the current directory that is attached to theĮmail message. The Body parameter is the content of the message. The Subject parameter describes the content To parameter specifies the message's recipients. \data.csv -Priority High -DeliveryNotificationOption OnSuccess, OnFailure -SmtpServer '' Send-MailMessage -From 'User01 ' -To 'User02 ', 'User03 ' -Subject 'Sending the Attachment' -Body "Forgot to send the attachment. This example sends an email message with an attachment. Test mail as the message because the optional Body parameter is not included. The Subject parameter uses the text string To parameter specifies the message's recipient. The Send-MailMessage cmdlet uses the From parameter to specify the message's sender. Send-MailMessage -From 'User01 ' -To 'User02 ' -Subject 'Test mail'

Uses the default $PSEmailServer variable for the SMTP server, so the SmtpServer parameter is The From, To, and Subject parameters are required by Send-MailMessage. This example sends an email message from one person to another person. Examples Example 1: Send an email from one person to another person While there is no immediate replacement available in PowerShell, we recommend you do This cmdlet does not guarantee secure connections to Next, let’s modify our Angular app.The Send-MailMessage cmdlet is obsolete. This way, we can find the client using the connectionId and send a message just to that client.Īdditionally, we add a new GetConnectionId() method, which returns the connectionId of the client. We change the BroadcastChartData() method to accept connectionId as an additional parameter. Public string GetConnectionId() => Context.ConnectionId Public async Task BroadcastChartData(List data, string connectionId) =>Īwait Clients.Client(connectionId).SendAsync("broadcastchartdata", data) To implement this, first, let’s modify the ChartHub class in our server-side project: public class ChartHub : Hub Then, the SignalR hub can send a message back to just this client. Here, we are going to modify the last step in such a way that once we click the Angular chart on the client app, it additionally sends the connectionId to the server, which helps the server to identify this client. On clicking the chart, we send a message from the client to the server, which in turn pushes a message to all connected clients. Then, we implemented an Angular chart in the client app which consumes this data. In that article, we implemented an ASP.NET Core SignalR server that uses a timer to send real-time data to all connected clients. We are going to do that by modifying the applications that we created in the linked article. Now let’s straight away implement client-specific messages in our SignalR app. In the previous section, we discussed how we can send messages to individual connections, users, and groups. Implementing Client-Specific Messages Using SignalR Groups are a good choice when we want to implement notifications specific to particular user groups, roles, etc in our application. Then, we can send messages to the group using the group name: public async Task BroadcastToGroup(string groupName) => await Clients.Group(groupName) => await Groups.RemoveFromGroupAsync(Context.ConnectionId, groupName) Public async Task RemoveFromGroup(string groupName)

=> await Groups.AddToGroupAsync(Context.ConnectionId, groupName) Connections can be added to or removed from groups via the AddToGroupAsync() and RemoveFromGroupAsync() methods respectively: public async Task AddToGroup(string groupName) A connection can become a member of multiple groups. Groups are the recommended way to send messages to multiple connections as it is easy to manage the groups in our application based on the application’s logic. We can send messages to all connections in a group using the group name. Only then can the connections be mapped to specific users.Ī SignalR group is a collection of connections associated with a name. However, sending messages to individual users requires our application to authenticate users and set the NameIdentifier claim in ClaimsPrincipal. Remember that when we are sending messages to a user, they will be sent to all connections associated with that user and not just any particular connection. => await Clients.User(userId).SendAsync("broadcasttouser", data) We can send messages to a particular user using this value: public async Task BroadcastToUser(string data, string userId) => await Clients.Client(connectionId).SendAsync("broadcasttoclient", data) īy default, SignalR uses the ClaimTypes.NameIdentifier from the ClaimsPrincipal associated with the connection as the user identifier. Public async Task BroadcastToConnection(string data, string connectionId)