From ef5531ec06aa4eaf128b03681fa6562146f10b02 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Thu, 26 Feb 2015 01:33:05 +0100
Subject: [PATCH] Don't crash when TextBox.Text == null.

---
 Perspex.Controls/Presenters/TextPresenter.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Perspex.Controls/Presenters/TextPresenter.cs b/Perspex.Controls/Presenters/TextPresenter.cs
index 25357db001..83ee90f3a4 100644
--- a/Perspex.Controls/Presenters/TextPresenter.cs
+++ b/Perspex.Controls/Presenters/TextPresenter.cs
@@ -289,7 +289,7 @@ namespace Perspex.Controls.Presenters
                     {
                         this.DeleteSelection();
                         caretIndex = this.CaretIndex;
-                        text = this.Text;
+                        text = this.Text ?? string.Empty;
                         this.Text = text.Substring(0, caretIndex) + e.Text + text.Substring(caretIndex);
                         ++this.CaretIndex;
                         textEntered = true;