# DialogViewGenerator.ShowErrorMessage Event

> Occurs when the dialog box should show an error message. The event handler receives an argument of type ServerVisualization.ShowErrorMessageEventArgs containing data related to this event.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Event
- **Introduced:** 21.0
- **Namespace:** `TXTextControl.ServerVisualisation`
- **Package:** `TXTextControl.TextControl.Core.SDK` (assembly `TXTextControl.Server.Core.dll`, from the private NuGet feed or Text Control Offline Packages)
- **Package:** `TXTextControl.TextControl.ASP.SDK` (assembly `TXTextControl.Server.dll`, from the private NuGet feed or Text Control Offline Packages)
- **.NET Framework:** reference `TXTextControl.Server.dll` from the setup
- **Path:** TX Text Control .NET Server > Reference > TXTextControl.ServerVisualization > DialogViewGenerator.ShowErrorMessage Event
- **335 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-servervisualization/dialogviewgenerator/showerrormessage-event/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-servervisualization/dialogviewgenerator/showerrormessage-event/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-servervisualization/dialogviewgenerator/showerrormessage-event/llms-full.txt

---

### Description

Occurs when the dialog box should show an error message. The event handler receives an argument of type [ServerVisualization.ShowErrorMessageEventArgs](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-servervisualization/showerrormessageeventargs/llms-full.txt) containing data related to this event.

### Syntax

```csharp
public event ShowErrorMessageEventHandler ShowErrorMessage;
```

```vbnet
Public Event ShowErrorMessage As ShowErrorMessageEventHandler
```

### Examples

The following example records useful context when show error message occurs.

```csharp
dialogViewGenerator.ShowErrorMessage += (sender, e) =>
{
    Console.WriteLine($"Error Message: {e.ErrorMessage}");
};
```

```vbnet
AddHandler dialogViewGenerator.ShowErrorMessage,
    Sub(sender, e)
        Console.WriteLine($"Error Message: {e.ErrorMessage}")
    End Sub
```

---

## Nearby

- **Previous:** [DialogViewGenerator.ShowDialogBox Event](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-servervisualization/dialogviewgenerator/showdialogbox-event/llms-full.txt)
- **Next:** [DialogViewGenerator.UserInput Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-servervisualization/dialogviewgenerator/userinput-property/llms-full.txt)