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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>
    </build-info>


<item>
            <title>[CSHARP-1243] Set Value to a BsonElement</title>
                <link>https://jira.mongodb.org/browse/CSHARP-1243</link>
                <project id="10041" key="CSHARP">C# Driver</project>
                    <description>&lt;p&gt;Hi,&lt;br/&gt;
I want to set a value to a bson element in C# driver 2.0, in last version 1.9.2 this code works ok:&lt;br/&gt;
date.Value = BsonValue.Create(date.Value.ToUniversalTime().ToString(&quot;o&quot;));&lt;br/&gt;
but in the new version 2.0, Value only have get and i don&apos;t find how to set the value.&lt;/p&gt;

</description>
                <environment>- VS 2013&lt;br/&gt;
- NET Frameworks 4.5.1&lt;br/&gt;
- Windows 8.1 x64</environment>
        <key id="198888">CSHARP-1243</key>
            <summary>Set Value to a BsonElement</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="1" iconUrl="https://jira.mongodb.org/images/icons/priorities/blocker.svg">Blocker - P1</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="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="PPetrica">petrica [X]</reporter>
                        <labels>
                            <label>driver</label>
                            <label>question</label>
                    </labels>
                <created>Mon, 20 Apr 2015 10:58:14 +0000</created>
                <updated>Fri, 5 Apr 2019 13:57:57 +0000</updated>
                            <resolved>Mon, 27 Apr 2015 13:38:43 +0000</resolved>
                                    <version>2.0</version>
                                                    <component>BSON</component>
                    <component>Documentation</component>
                    <component>Serialization</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="892622" author="rstam" created="Mon, 20 Apr 2015 12:50:00 +0000"  >&lt;p&gt;In the 2.0 version of the driver the BsonElement class was changed to an immutable struct. The two primary reasons this was done were:&lt;/p&gt;

&lt;p&gt;1. Performance, structs create less pressure on the garbage collector&lt;br/&gt;
2. Immutability, less chance of unintended side effects when an existing BsonElement is mutated&lt;/p&gt;

&lt;p&gt;You can probably change your code to just replace the value of your date variable with an entire new BsonElement instance:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;date = new BsonElement(date.Name, date.Value.ToUniversalTime().ToString(&quot;o&quot;));&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Although depending on where the value of your date variable came from you might have been depending on mutating the existing instance.&lt;/p&gt;

&lt;p&gt;For example, the following code will no longer behave the same as it did in 1.10:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;var date = document.GetElement(&quot;date&quot;);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;date = new BsonElement(date.Name, date.Value.ToUniversalTime().ToString(&quot;o&quot;));&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;In 2.0 this code only modifies the date variable, leaving the original document unchanged. If your intent is to update the &quot;date&quot; field inside a document write this instead:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;document[&quot;date&quot;] = document[&quot;date&quot;].ToUniversalTime().ToString(&quot;o&quot;);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

</comment>
                            <comment id="892598" author="craiggwilson" created="Mon, 20 Apr 2015 12:09:31 +0000"  >&lt;p&gt;Hi Petrica,&lt;/p&gt;

&lt;p&gt;Questions like this are better asked in our public forums: &lt;a href=&quot;https://groups.google.com/forum/?pli=1#!forum/mongodb-csharp&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://groups.google.com/forum/?pli=1#!forum/mongodb-csharp&lt;/a&gt; or on stackoverflow.  However, since we are here...&lt;/p&gt;

&lt;p&gt;To answer this question, we need a bit more information. What is the type of your &quot;date&quot; variable?&lt;/p&gt;

&lt;p&gt;Craig&lt;/p&gt;</comment>
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