# DataSourceManager.PossibleMergeBlockTablesChanged Event

> Is fired when the contents of the PossibleMergeBlockTables property change.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Event
- **Introduced:** 24.0
- **Namespace:** `TXTextControl.DocumentServer.DataSources`
- **Package:** `TXTextControl.TextControl.Core.SDK` (assembly `TXDocumentServer.Core.dll`, from the private NuGet feed or Text Control Offline Packages)
- **Package:** `TXTextControl.TextControl.ASP.SDK` (assembly `TXDocumentServer.dll`, from the private NuGet feed or Text Control Offline Packages)
- **.NET Framework:** reference `TXDocumentServer.dll` from the setup
- **Path:** TX Text Control .NET Server > Reference > TXTextControl.DocumentServer.DataSources > DataSourceManager.PossibleMergeBlockTablesChanged Event
- **337 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-datasources/datasourcemanager/possiblemergeblocktableschanged-event/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-datasources/datasourcemanager/possiblemergeblocktableschanged-event/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-datasources/datasourcemanager/possiblemergeblocktableschanged-event/llms-full.txt

---

### Description

Is fired when the contents of the [PossibleMergeBlockTables](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-datasources/datasourcemanager/possiblemergeblocktables-property/llms-full.txt) property change.

### Syntax

```csharp
public event EventHandler PossibleMergeBlockTablesChanged;
```

```vbnet
Public Event PossibleMergeBlockTablesChanged As EventHandler
```

### Examples

The following example records useful context when possible merge block tables changed occurs.

```csharp
dataSourceManager.PossibleMergeBlockTablesChanged += (sender, e) =>
{
    Console.WriteLine($"Possible Merge Block Tables Changed at {DateTime.Now:u}");
};
```

```vbnet
AddHandler dataSourceManager.PossibleMergeBlockTablesChanged,
    Sub(sender, e)
        Console.WriteLine($"Possible Merge Block Tables Changed at {DateTime.Now:u}")
    End Sub
```

---

## Nearby

- **Previous:** [DataSourceManager.PossibleMergeBlockTables Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-datasources/datasourcemanager/possiblemergeblocktables-property/llms-full.txt)
- **Next:** [DataSourceManager.PossibleMergeFieldColumns Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-datasources/datasourcemanager/possiblemergefieldcolumns-property/llms-full.txt)