EF获取数据库表名和列名

EF获取数据库表名和列名

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1.  

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2. /// <summary> 

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3. /// 通过当前DBContext上下文获取对应数据库中所有得表 

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4. /// </summary> 

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5. /// <returns></returns> 

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6. public List<string> GetTableNames() 

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7. { 

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8. var TableNames = new List<string>(); 

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9. var metadata = ((IObjectContextAdapter) this).ObjectContext.MetadataWorkspace; 

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10. var tables = metadata.GetItemCollection(DataSpace.SSpace).GetItems<EntityContainer>().Single() 

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11. .BaseEntitySets.OfType<EntitySet>() 

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12. .Where(s => !s.MetadataProperties.Contains("Type") || 

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13. s.MetadataProperties["Type"].ToString() == "Tables"); 

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14. foreach (var table in tables) 

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15. { 

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16. var tableName = table.MetadataProperties.Contains("Table") && 

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17. table.MetadataProperties["Table"].Value != null 

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18. ? table.MetadataProperties["Table"].Value.ToString() 

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19. : table.Name; 

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20. var tableSchema = table.MetadataProperties["Schema"].Value.ToString(); 

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21. TableNames.Add(tableSchema + "." + tableName); 

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22. } 

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23. return TableNames; 

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24. } 

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25. public List<string> GetColumnNamesByTable(string tableName) 

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26. { 

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27. string name = tableName.Split('.')[1]; 

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28. string schema = tableName.Split('.')[0]; 

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29. var ColumnNames = new List<string>(); 

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30. var metadata = ((IObjectContextAdapter)this).ObjectContext.MetadataWorkspace; 

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31. var table = metadata.GetItemCollection(DataSpace.SSpace).GetItems<EntityContainer>().Single().BaseEntitySets.OfType<EntitySet>().Where(s=>!s.MetadataProperties.Contains("Type") || s.MetadataProperties["Type"].ToString() == "Tables").FirstOrDefault(t => t.Table==name&&t.Schema==schema); 

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32.  

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33. foreach (var member in table.ElementType.Members) 

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34. { 

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35. var ColumnName = member.Name; 

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36. ColumnNames.Add(ColumnName); 

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37. } 

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38. return ColumnNames; 

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39. } 

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