16 lines
6.9 KiB
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16 lines
6.9 KiB
HTML
<html><head><meta http-equiv="X-UA-Compatible" content="IE=edge" /><link rel="shortcut icon" href="../icons/favicon.ico" /><style type="text/css">.OH_CodeSnippetContainerTabLeftActive, .OH_CodeSnippetContainerTabLeft,.OH_CodeSnippetContainerTabLeftDisabled { }.OH_CodeSnippetContainerTabRightActive, .OH_CodeSnippetContainerTabRight,.OH_CodeSnippetContainerTabRightDisabled { }.OH_footer { }</style><link rel="stylesheet" type="text/css" href="../styles/branding.css" /><link rel="stylesheet" type="text/css" href="../styles/branding-en-US.css" /><script type="text/javascript" src="../scripts/branding.js"> </script><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>DataProvider.CheckExistence Method </title><meta name="Language" content="en-us" /><meta name="System.Keywords" content="CheckExistence method" /><meta name="System.Keywords" content="DataProvider.CheckExistence method" /><meta name="Microsoft.Help.F1" content="Microsoft.Research.DryadLinq.DataProvider.CheckExistence" /><meta name="Microsoft.Help.Id" content="M:Microsoft.Research.DryadLinq.DataProvider.CheckExistence(Microsoft.Research.DryadLinq.DryadLinqContext,System.Uri,System.Boolean)" /><meta name="Description" content="Checks the existence of a specified dataset." /><meta name="Microsoft.Help.ContentType" content="Reference" /><meta name="BrandingAware" content="true" /><meta name="container" content="Microsoft.Research.DryadLinq" /><meta name="file" content="7957fe73-07cf-2939-6e5e-a974e62adae3" /><meta name="guid" content="7957fe73-07cf-2939-6e5e-a974e62adae3" /></head><body onload="OnLoad('cs')"><input type="hidden" id="userDataCache" class="userDataStyle" /><div class="OH_outerDiv"><div class="OH_outerContent"><table class="TitleTable"><tr><td class="OH_tdTitleColumn">DataProvider<span id="LST78867D0C_0"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST78867D0C_0?cpp=::|nu=.");</script>CheckExistence Method </td><td class="OH_tdRunningTitleColumn">DryadLINQ documentation</td></tr></table><div id="mainSection"><div id="mainBody"><span class="introStyle"></span><div class="summary">
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Checks the existence of a specified dataset.
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</div><p> </p><strong>Namespace:</strong> <a href="efe6507e-9fd8-bbd3-8227-fd6ba9e289c1.htm">Microsoft.Research.DryadLinq</a><br /><strong>Assembly:</strong> Microsoft.Research.DryadLinq (in Microsoft.Research.DryadLinq.dll) Version: 0.2.1.0 (0.2.1.0)<div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">Syntax</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"> </div><div class="OH_CodeSnippetContainer"><div class="OH_CodeSnippetContainerTabs"><div class="OH_CodeSnippetContainerTabLeft" id="ID0ECCA_tabimgleft"> </div><div id="ID0ECCA_tab1" class="OH_CodeSnippetContainerTabFirst"><a href="#" onclick="javascript:ChangeTab('ID0ECCA','cs','1','3');return false;">C#</a></div><div id="ID0ECCA_tab2" class="OH_CodeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0ECCA','vb','2','3');return false;">VB</a></div><div id="ID0ECCA_tab3" class="OH_CodeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0ECCA','cpp','3','3');return false;">C++</a></div><div class="OH_CodeSnippetContainerTabRight" id="ID0ECCA_tabimgright"> </div></div><div class="OH_CodeSnippetContainerCodeCollection"><div class="OH_CodeSnippetToolBar"><div class="OH_CodeSnippetToolBarText"><a id="ID0ECCA_copyCode" href="#" onclick="javascript:CopyToClipboard('ID0ECCA');return false;" title="Copy">Copy</a></div></div><div id="ID0ECCA_code_Div1" class="OH_CodeSnippetContainerCode" style="display: block"><pre xml:space="preserve"><span class="keyword">public</span> <span class="keyword">abstract</span> <span class="keyword">void</span> <span class="identifier">CheckExistence</span>(
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<span class="identifier">DryadLinqContext</span> <span class="parameter">context</span>,
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<span class="identifier">Uri</span> <span class="parameter">dataSetUri</span>,
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<span class="identifier">bool</span> <span class="parameter">deleteIfExists</span>
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)</pre></div><div id="ID0ECCA_code_Div2" class="OH_CodeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">Public</span> <span class="keyword">MustOverride</span> <span class="keyword">Sub</span> <span class="identifier">CheckExistence</span> (
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<span class="parameter">context</span> <span class="keyword">As</span> <span class="identifier">DryadLinqContext</span>,
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<span class="parameter">dataSetUri</span> <span class="keyword">As</span> <span class="identifier">Uri</span>,
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<span class="parameter">deleteIfExists</span> <span class="keyword">As</span> <span class="identifier">Boolean</span>
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)</pre></div><div id="ID0ECCA_code_Div3" class="OH_CodeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">public</span>:
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<span class="keyword">virtual</span> <span class="keyword">void</span> <span class="identifier">CheckExistence</span>(
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<span class="identifier">DryadLinqContext</span>^ <span class="parameter">context</span>,
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<span class="identifier">Uri</span>^ <span class="parameter">dataSetUri</span>,
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<span class="identifier">bool</span> <span class="parameter">deleteIfExists</span>
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) <span class="keyword">abstract</span></pre></div></div></div><script type="text/javascript">AddLanguageTabSet("ID0ECCA");</script><h4 class="subHeading">Parameters</h4><dl><dt><span class="parameter">context</span></dt><dd>Type: <a href="093a0025-a8c4-d1e2-a289-d3863b1a845f.htm">Microsoft.Research.DryadLinq<span id="LST78867D0C_1"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST78867D0C_1?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>DryadLinqContext</a><br />The current DryadLinqContext.</dd><dt><span class="parameter">dataSetUri</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/txt7706a" target="_blank">System<span id="LST78867D0C_2"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST78867D0C_2?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Uri</a><br />The URI of the dataset.</dd><dt><span class="parameter">deleteIfExists</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">System<span id="LST78867D0C_3"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST78867D0C_3?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Boolean</a><br />True to delete if the dataset exists.</dd></dl><div class="OH_CollapsibleAreaRegion" id="seeAlsoSection"><div class="OH_regiontitle">See Also</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"> </div><h4 class="subHeading">Reference</h4><div class="seeAlsoStyle"><a href="e30d9823-523d-4504-b321-4c990c768d6d.htm">DataProvider Class</a></div><div class="seeAlsoStyle"><a href="efe6507e-9fd8-bbd3-8227-fd6ba9e289c1.htm">Microsoft.Research.DryadLinq Namespace</a></div></div></div></div></div><div id="OH_footer" class="OH_footer"> </div></body></html> |