# C1.Win.C1Editor.Internal.C1WebBrowserBase

## Content

<div class="doc-site-dotnet-api-container">



  <h1 id="C1_Win_C1Editor_Internal_C1WebBrowserBase" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase" class="text-break">C1WebBrowserBase Class
</h1>
  <div class="markdown level0 summary"><p>This class makes next things over standard .NET WebBrowser:
1.Performs initialization with navigating to &quot;about:blank&quot;
2.Controls content loading and appearance
3.Allows to load HTML from string with optional path
4.Can set edit mode to MSHTML document
It must me COM-visible to catch DISPID_AMBIENT_DLCONTROL</p>
</div>
  <div class="markdown level0 conceptual"></div>
  <div class="inheritance">
    <h5>Inheritance</h5>
    <div class="level0"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></div>
    <div class="level1"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.marshalbyrefobject">MarshalByRefObject</a></div>
    <div class="level2"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.componentmodel.component">Component</a></div>
    <div class="level3"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.control">Control</a></div>
    <div class="level4"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.scrollablecontrol">ScrollableControl</a></div>
    <div class="level5"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.containercontrol">ContainerControl</a></div>
    <div class="level6"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.usercontrol">UserControl</a></div>
    <div class="level7"><span class="xref">C1WebBrowserBase</span></div>
  </div>
  <div class="implements">
    <h5>Implements</h5>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.idroptarget">IDropTarget</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.componentmodel.isynchronizeinvoke">ISynchronizeInvoke</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.iwin32window">IWin32Window</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.ibindablecomponent">IBindableComponent</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.componentmodel.icomponent">IComponent</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.idisposable">IDisposable</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.icontainercontrol">IContainerControl</a></div>
    <div><a class="xref" href="C1.Win.C1Editor.Internal.HTML.IOleClientSite.html">IOleClientSite</a></div>
    <div><a class="xref" href="C1.Win.C1Editor.Internal.HTML.IDocHostUIHandler.html">IDocHostUIHandler</a></div>
    <div><a class="xref" href="C1.Win.C1Editor.Internal.HTML.IHTMLChangeSink.html">IHTMLChangeSink</a></div>
    <div><a class="xref" href="C1.Win.C1Editor.Internal.HTML.HTMLDocumentEvents2.html">HTMLDocumentEvents2</a></div>
    <div><a class="xref" href="C1.Win.C1Editor.Internal.HTML.IServiceProvider.html">IServiceProvider</a></div>
    <div><a class="xref" href="C1.Win.C1Editor.Internal.HTML.IHTMLEditHost.html">IHTMLEditHost</a></div>
    <div><a class="xref" href="C1.Win.C1Editor.Internal.HTML.IDropTarget.html">IDropTarget</a></div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.C1Editor.Internal.html">C1.Win.C1Editor.Internal</a></h6>
  <h6><strong>Assembly</strong>: C1.Win.C1Editor.4.8.dll</h6>
  <h5 id="C1_Win_C1Editor_Internal_C1WebBrowserBase_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">[ComVisible(true)]
public class C1WebBrowserBase : UserControl, IDropTarget, ISynchronizeInvoke, IWin32Window, IBindableComponent, IComponent, IDisposable, IContainerControl, IOleClientSite, IDocHostUIHandler, IHTMLChangeSink, HTMLDocumentEvents2, IServiceProvider, IHTMLEditHost, IDropTarget</code></pre>
  </div>
  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">&lt;ComVisible(True)&gt;
Public Class C1WebBrowserBase
    Inherits UserControl
    Implements IDropTarget, ISynchronizeInvoke, IWin32Window, IBindableComponent, IComponent, IDisposable, IContainerControl, IOleClientSite, IDocHostUIHandler, IHTMLChangeSink, HTMLDocumentEvents2, IServiceProvider, IHTMLEditHost, IDropTarget</code></pre>
  </div>
  <h3 id="properties">Properties
</h3>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_AllowDrop" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.AllowDrop">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.AllowDrop.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_AllowDrop">AllowDrop</a>
        </td>
        <td class="markdown level1 summary"><p>Gets or sets a value indicating whether the control can accept data that the user drags onto it.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_CSS" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.CSS">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.CSS.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_CSS">CSS</a>
        </td>
        <td class="markdown level1 summary"><p>For internal use.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_DocType" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.DocType">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.DocType.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_DocType">DocType</a>
        </td>
        <td class="markdown level1 summary"><p>Sets DocType</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_Document" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.Document">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.Document.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_Document">Document</a>
        </td>
        <td class="markdown level1 summary"><p>returns loaded document</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_Edit" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.Edit">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.Edit.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_Edit">Edit</a>
        </td>
        <td class="markdown level1 summary"><p>Sets Edit mode for browser</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_Focused" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.Focused">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.Focused.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_Focused">Focused</a>
        </td>
        <td class="markdown level1 summary"><p>Return true, if control focused; otherwise, False.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_Mode" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.Mode">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.Mode.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_Mode">Mode</a>
        </td>
        <td class="markdown level1 summary"><p>Sets appearance mode</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_ReadOnly" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.ReadOnly">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.ReadOnly.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_ReadOnly">ReadOnly</a>
        </td>
        <td class="markdown level1 summary"><p>Gets or sets a value indicating whether browser content is read-only.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_RestoreCursorAfterUndoRedo" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.RestoreCursorAfterUndoRedo">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.RestoreCursorAfterUndoRedo.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_RestoreCursorAfterUndoRedo">RestoreCursorAfterUndoRedo</a>
        </td>
        <td class="markdown level1 summary"><p>For internal use.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_ShowComments" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.ShowComments">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.ShowComments.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_ShowComments">ShowComments</a>
        </td>
        <td class="markdown level1 summary"><p>Sets appearance mode</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_SuppressAccessibility" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.SuppressAccessibility">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.SuppressAccessibility.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_SuppressAccessibility">SuppressAccessibility</a>
        </td>
        <td class="markdown level1 summary"><p>Suppresses browser accessibility options if true</p>
</td>
      </tr>
    </tbody>
  </table>
  <h3 id="methods">Methods
</h3>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_BeginUndoRedoAction_System_String_" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.BeginUndoRedoAction(System.String)">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.BeginUndoRedoAction.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_BeginUndoRedoAction_System_String_">BeginUndoRedoAction(string)</a>
        </td>
        <td class="markdown level1 summary"><p>For internal use.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_Dispose_System_Boolean_" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.Dispose(System.Boolean)">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.Dispose.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_Dispose_System_Boolean_">Dispose(bool)</a>
        </td>
        <td class="markdown level1 summary"><p>Clean up any resources being used.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_EndUndoRedoAction" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.EndUndoRedoAction">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.EndUndoRedoAction.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_EndUndoRedoAction">EndUndoRedoAction()</a>
        </td>
        <td class="markdown level1 summary"><p>For internal use.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_ExecClick" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.ExecClick">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.ExecClick.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_ExecClick">ExecClick()</a>
        </td>
        <td class="markdown level1 summary"><p>This member is for internal use only.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_Focus" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.Focus">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.Focus.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_Focus">Focus()</a>
        </td>
        <td class="markdown level1 summary"><p>Sets input focus to the control.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_Idispatch_Invoke_Handler_DL_Control" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.Idispatch_Invoke_Handler_DL_Control">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.Idispatch_Invoke_Handler_DL_Control.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_Idispatch_Invoke_Handler_DL_Control">Idispatch_Invoke_Handler_DL_Control()</a>
        </td>
        <td class="markdown level1 summary"><p>This member is for internal use only.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_Idispatch_Invoke_Handler_Usermode" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.Idispatch_Invoke_Handler_Usermode">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.Idispatch_Invoke_Handler_Usermode.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_Idispatch_Invoke_Handler_Usermode">Idispatch_Invoke_Handler_Usermode()</a>
        </td>
        <td class="markdown level1 summary"><p>This member is for internal use only.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_LoadFromString_System_String_System_Uri_" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.LoadFromString(System.String,System.Uri)">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.LoadFromString.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_LoadFromString_System_String_System_Uri_">LoadFromString(string, Uri)</a>
        </td>
        <td class="markdown level1 summary"><p>Loads browser content from string</p>
<param name="html">HTML to output
<param name="uri">Path to resolve pictures, video, links e t.c.
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_LockNotifyChanges" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.LockNotifyChanges">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.LockNotifyChanges.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_LockNotifyChanges">LockNotifyChanges()</a>
        </td>
        <td class="markdown level1 summary"><p>For internal use.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_Navigate_System_String_" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.Navigate(System.String)">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.Navigate.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_Navigate_System_String_">Navigate(string)</a>
        </td>
        <td class="markdown level1 summary"><p>Loads document from URL</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_OnHandleCreated_System_EventArgs_" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.OnHandleCreated(System.EventArgs)">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.OnHandleCreated.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_OnHandleCreated_System_EventArgs_">OnHandleCreated(EventArgs)</a>
        </td>
        <td class="markdown level1 summary"><p>For internal use.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_OnHandleDestroyed_System_EventArgs_" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.OnHandleDestroyed(System.EventArgs)">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.OnHandleDestroyed.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_OnHandleDestroyed_System_EventArgs_">OnHandleDestroyed(EventArgs)</a>
        </td>
        <td class="markdown level1 summary"><p>For internal use.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_UnlockNotifyChanges" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.UnlockNotifyChanges">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.UnlockNotifyChanges.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_UnlockNotifyChanges">UnlockNotifyChanges()</a>
        </td>
        <td class="markdown level1 summary"><p>For internal use.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1Editor_Internal_C1WebBrowserBase_WndProc_System_Windows_Forms_Message__" data-uid="C1.Win.C1Editor.Internal.C1WebBrowserBase.WndProc(System.Windows.Forms.Message@)">
          <a class="xref" href="C1.Win.C1Editor.Internal.C1WebBrowserBase.WndProc.html#C1_Win_C1Editor_Internal_C1WebBrowserBase_WndProc_System_Windows_Forms_Message__">WndProc(ref Message)</a>
        </td>
        <td class="markdown level1 summary"><p>For internal use.</p>
</td>
      </tr>
    </tbody>
  </table>

</div>
