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04/02/2012

EnumCandidateKeys 方法

列舉資料庫中所有候選主索引鍵的清單，此清單可供外部索引鍵參考。

命名空間： Microsoft.SqlServer.Management.Smo
組件： Microsoft.SqlServer.Smo (在 Microsoft.SqlServer.Smo.dll 中)

語法

'宣告
Public Function EnumCandidateKeys As DataTable
'用途
Dim instance As Database
Dim returnValue As DataTable

returnValue = instance.EnumCandidateKeys()

public DataTable EnumCandidateKeys()

public:
DataTable^ EnumCandidateKeys()

member EnumCandidateKeys : unit -> DataTable

public function EnumCandidateKeys() : DataTable

傳回值

型別：System.Data. . :: . .DataTable
包含候選索引鍵之列舉清單的 DataTable 系統物件值。此表將描述傳回之 DataTable 的不同資料行。

資料行	資料類型	描述
Table_Name	String	包含候選主索引鍵的資料表名稱。
名稱	String	候選主索引鍵的名稱。

範例

The example runs a Server object enumeration method, but extracting the information from the DataTable object is the same for database object enumeration methods.

'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Call the EnumCollations method and return collation information to DataTable variable.
Dim d As DataTable
'Select the returned data into an array of DataRow.
d = srv.EnumCollations
'Iterate through the rows and display collation details for the instance of SQL Server.
Dim r As DataRow
Dim c As DataColumn
For Each r In d.Rows
    Console.WriteLine("============================================")
    For Each c In r.Table.Columns
        Console.WriteLine(c.ColumnName + " = " + r(c).ToString)
    Next
Next

PowerShell

$srv = new-Object Microsoft.SqlServer.Management.Smo.Server("(local)")

$d = new-object System.Data.Datatable
$d = $srv.EnumCollations

Foreach ($r in $d.Rows)
{
   Write-Host "============================================"
   Foreach ($c in $d.Columns)
   {
      Write-Host $c.ColumnName "=" $r[$c]
   }
}