diff --git a/minisqlquery-master/src/MiniSqlQuery.Core/IFindReplaceWindow.cs b/minisqlquery-master/src/MiniSqlQuery.Core/IFindReplaceWindow.cs
new file mode 100644
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+++ b/minisqlquery-master/src/MiniSqlQuery.Core/IFindReplaceWindow.cs
@@ -0,0 +1,56 @@
+#region License
+
+// Copyright 2005-2019 Paul Kohler (https://github.com/paulkohler/minisqlquery). All rights reserved.
+// This source code is made available under the terms of the GNU Lesser General Public License v3.0
+// https://github.com/paulkohler/minisqlquery/blob/master/LICENSE
+
+#endregion
+
+using System.Windows.Forms;
+
+namespace MiniSqlQuery.Core
+{
+ /// <summary>
+ /// An interface for the form that provides the find replace functionality.
+ /// </summary>
+ public interface IFindReplaceWindow
+ {
+ /// <summary>
+ /// Gets or sets the "find string".
+ /// </summary>
+ /// <value>The find string.</value>
+ string FindString { get; set; }
+
+ /// <summary>
+ /// Gets a value indicating whether this instance is disposed.
+ /// </summary>
+ /// <value>
+ /// <c>true</c> if this instance is disposed; otherwise, <c>false</c>.
+ /// </value>
+ bool IsDisposed { get; }
+
+ /// <summary>
+ /// Gets or sets the "replace string".
+ /// </summary>
+ /// <value>The replace string.</value>
+ string ReplaceString { get; set; }
+
+ /// <summary>
+ /// Gets or sets a value indicating whether the form is "top most" in the window stack.
+ /// </summary>
+ /// <value><c>true</c> if it's top most; otherwise, <c>false</c>.</value>
+ bool TopMost { get; set; }
+
+ /// <summary>
+ /// Gets or sets a value indicating whether this form is visible.
+ /// </summary>
+ /// <value><c>true</c> if visible; otherwise, <c>false</c>.</value>
+ bool Visible { get; set; }
+
+ /// <summary>
+ /// Shows the window.
+ /// </summary>
+ /// <param name = "owner">The owner form.</param>
+ void Show(IWin32Window owner);
+ }
+}
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