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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[CSHARP-4522] Issue with Casting via C# LINQ Statements</title>
                <link>https://jira.mongodb.org/browse/CSHARP-4522</link>
                <project id="10041" key="CSHARP">C# Driver</project>
                    <description>&lt;p&gt;Creating the issue from forum post: &lt;a href=&quot;https://www.mongodb.com/community/forums/t/issue-with-2-18-to-2-19-nuget-upgrade-of-mongodb-c-driver/211894/10&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.mongodb.com/community/forums/t/issue-with-2-18-to-2-19-nuget-upgrade-of-mongodb-c-driver/211894/10&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;The problem is when attempting to cast an object as a particular type in a C# LINQ statement to satisfy the C# compiler and access properties, the mongo driver(according to the person who responded in the forum) is attempting to do a server-side $convert&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;This just started after upgrading from the C# Nuget 2.18 to 2.19. I&apos;ve uploaded a simple test solution which demonstrates this.&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;I cannot use the following: public static T UpsertThing&amp;lt;T&amp;gt;( IMongoDatabase DB, Expression&amp;lt;Func&amp;lt;T, bool&amp;gt;&amp;gt; filter, T record) where T: AMongoThing&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;because we potentially cast as multiple different objects depending on the query and security we are attempting to achieve.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2259131">CSHARP-4522</key>
            <summary>Issue with Casting via C# LINQ Statements</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="10300" iconUrl="https://jira.mongodb.org/images/icons/priorities/medium.svg">Unknown</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="robert@mongodb.com">Robert Stam</assignee>
                                    <reporter username="mmann@smartcert.tech">Mark Mann</reporter>
                        <labels>
                    </labels>
                <created>Thu, 9 Feb 2023 15:57:43 +0000</created>
                <updated>Sat, 28 Oct 2023 11:46:57 +0000</updated>
                            <resolved>Wed, 22 Feb 2023 23:54:57 +0000</resolved>
                                    <version>2.19.0</version>
                                    <fixVersion>2.19.1</fixVersion>
                                    <component>LINQ3</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5299664" author="xgen-internal-githook" created="Fri, 24 Mar 2023 19:00:01 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;rstam&apos;, &apos;email&apos;: &apos;robert@robertstam.org&apos;, &apos;username&apos;: &apos;rstam&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-4522&quot; title=&quot;Issue with Casting via C# LINQ Statements&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-4522&quot;&gt;&lt;del&gt;CSHARP-4522&lt;/del&gt;&lt;/a&gt;: Issue with Casting via C# LINQ Statements.&lt;br/&gt;
Branch: v2.19.x&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/bf946856cb8465580e193c1c989c5ce9130bad56&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/bf946856cb8465580e193c1c989c5ce9130bad56&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5223217" author="xgen-internal-githook" created="Wed, 22 Feb 2023 23:54:30 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;rstam&apos;, &apos;email&apos;: &apos;robert@robertstam.org&apos;, &apos;username&apos;: &apos;rstam&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-4522&quot; title=&quot;Issue with Casting via C# LINQ Statements&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-4522&quot;&gt;&lt;del&gt;CSHARP-4522&lt;/del&gt;&lt;/a&gt;: Issue with Casting via C# LINQ Statements.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/d46fe62fb159296ffaac6859935fd269d157e049&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/d46fe62fb159296ffaac6859935fd269d157e049&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5183409" author="rstam" created="Thu, 9 Feb 2023 16:19:47 +0000"  >&lt;p&gt;Thank you for reporting this issue. I will begin investigating it soon.&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="431047" name="MongoExperiment.zip" size="20018964" author="mmann@smartcert.tech" created="Thu, 9 Feb 2023 15:54:16 +0000"/>
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3.  Which versions of the driver/connector does this apply to?&lt;/p&gt;</customfieldvalue>

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