# Class DBColumnsExtensions

OptimaJet.Workflow.DbPersistence.DBColumnsExtensions

Namespace: [OptimaJet.Workflow.DbPersistence](https://api.workflowengine.io/sql-server/OptimaJet.Workflow.DbPersistence/)

```csharp
public static class DBColumnsExtensions
```

## Methods

`public static void AddColumn(this Dictionary<string, ColumnInfo> dbColumns, ColumnInfo column)` 

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `dbColumns` | `Dictionary<String, ColumnInfo>` |  |
| `column` | `ColumnInfo` |  |

`public static void AddColumns(this Dictionary<string, ColumnInfo> dbColumns, List<ColumnInfo> columns)` 

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `dbColumns` | `Dictionary<String, ColumnInfo>` |  |
| `columns` | `List<ColumnInfo>` |  |

`public static void AddColumns(this Dictionary<string, ColumnInfo> dbColumns, ColumnInfo[] columns)` 

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `dbColumns` | `Dictionary<String, ColumnInfo>` |  |
| `columns` | `ColumnInfo[]` |  |

[Previous ColumnInfo](https://api.workflowengine.io/sql-server/OptimaJet.Workflow.DbPersistence/ColumnInfo/) [Next DbObject<TEntity>](https://api.workflowengine.io/sql-server/OptimaJet.Workflow.DbPersistence/DbObject-TEntity/)