Automatically port some comments from System.Data (#3968)

* Automatically port some comments from System.Data

* Suggestions by David-Engel

Author: carlossanlop

xml/System.Data.SqlClient/SqlBulkCopy.xml

@@ -887,7 +887,7 @@ End Module
         <param name="connectionString">The connection string that contains enough information to connect to a server. The connection string should not use any of the following connection string keywords: <see langword="Integrated Security = true" />, <see langword="UserId" />, or <see langword="Password" />; or <see langword="ContextConnection = true" />.</param>
         <param name="credential">A <see cref="T:System.Data.SqlClient.SqlCredential" /> object.</param>
         <param name="newPassword">The new password.<paramref name="newPassword" /> must be read only. The password must also comply with any password security policy set on the server (for example, minimum length and requirements for specific characters).</param>
-        <param name="newSecurePassword">To be added.</param>
+        <param name="newSecurePassword">The new password. <paramref name="newSecurePassword" /> must be read only. The password must also comply with any password security policy set on the server (for example, minimum length and requirements for specific characters).</param>
         <summary>Changes the SQL Server password for the user indicated in the <see cref="T:System.Data.SqlClient.SqlCredential" /> object.</summary>
         <remarks>To be added.</remarks>
         <exception cref="T:System.ArgumentException">The connection string contains any combination of <see langword="UserId" />, <see langword="Password" />, or <see langword="Integrated Security=true" />.
@@ -2657,7 +2657,19 @@ class Program {
       <Docs>
         <param name="customProviders">The custom providers</param>
         <summary>Registers the column encryption key store providers.</summary>
-        <remarks>To be added.</remarks>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Example
+
+```csharp
+Dictionary<string, SqlColumnEncryptionKeyStoreProvider> customKeyStoreProviders = new Dictionary<string, SqlColumnEncryptionKeyStoreProvider>();
+MySqlClientHSMProvider myProvider = new MySqlClientHSMProvider();
+customKeyStoreProviders.Add(@"HSM Provider", myProvider);
+SqlConnection.RegisterColumnEncryptionKeyStoreProviders(customKeyStoreProviders)
+```
+          ]]></format>
+        </remarks>
       </Docs>
     </Member>
     <Member MemberName="ResetStatistics">

xml/System.Data.SqlClient/SqlConnection.xml

@@ -1092,7 +1092,17 @@ This method is an implementation of <xref:System.Data.Common.IDbColumnSchemaGene
         <param name="i">The zero-based column ordinal.</param>
         <summary>Gets the <see cref="T:System.Type" /> that is the data type of the object.</summary>
         <returns>The <see cref="T:System.Type" /> that is the data type of the object. If the type does not exist on the client, in the case of a User-Defined Type (UDT) returned from the database, **GetFieldType** returns null.</returns>
-        <remarks>To be added.</remarks>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This member is an explicit interface member implementation. It can be used only when the <xref:System.Data.SqlClient.SqlDataReader> instance is cast to an <xref:System.Data.IDataRecord> interface.
+ 
+ This information can be used to increase performance by indicating the strongly-typed accessor to call. (for example, using `GetInt32` is roughly ten times faster than using `GetValue`.)
+
+          ]]></format>
+        </remarks>
         <related type="Article" href="~/docs/framework/data/adonet/dataadapters-and-datareaders.md">DataAdapters and DataReaders (ADO.NET)</related>
         <related type="Article" href="~/docs/framework/data/adonet/sql/index.md">SQL Server and ADO.NET</related>
         <related type="Article" href="~/docs/framework/data/adonet/ado-net-overview.md">ADO.NET Overview</related>