Add project files.

Pages/Index.cshtml

@@ -0,0 +1,40 @@
+@page
+@model IndexModel
+
+<h2>Модель расчета поковок кольцо раскатное</h2>
+<form method="post">
+    <p>
+        <label>D:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="D" value="1360"/>
+    </p>
+    <p>
+        <label>d:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="dd" value="540"/>
+    </p>
+    <p>
+        <label>H:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="H" value="215,00"/>
+    </p>
+    <p>
+        <label>x:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any"
+               onchange="document.getElementById('z').value = this.value - 1" name="x" value="2"/>
+    </p>
+    <p>
+        <label>y:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="y" value="20"/>
+    </p>
+    <p>
+        <label>z:</label><br />
+        <input type="text" id="z" oninput="validateDecimal(this)" step="any" name="z" readonly value="1"/>
+    </p>
+    <p>
+        <label>Q:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="Q" value="60"/>
+    </p>
+    <p>
+        <label>Напуск на ТО:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="onTO" value="0"/>
+    </p>
+    <input type="submit" value="Отправить" />
+</form>