Add Migration Entities in LINQ

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

</td>

</tr>

<tr>

<td>

<asp:Label ID="Label3" runat="server" Text="Please Enter LastName: " ForeColor="Brown"

Font-Bold="true" Font-Italic="true"></asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

</td>

</tr>

<tr>

<td>

<asp:Label ID="Label4" runat="server" Text="Please Enter Age: " ForeColor="Brown"

Font-Bold="true" Font-Italic="true"></asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>

</td>

</tr>

<tr>

<td colspan="2" align="center">

<asp:Button ID="Button1" runat="server" Text="Insert Data" OnClick="Button1_Click"

BackColor="Orange" Font-Bold="true" /><br />

<br />

</td>

</tr>

</table>

<br />

<br />

<table>

<tr>

<td colspan="3">

<asp:Label ID="Label5" runat="server" Font-Bold="true"></asp:Label>

</td>

</tr>

</table>

</center>

</div>

</form>

</body>

</html>

Step 5: The complete code of WebForm1.aspx.cs looks like this:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace AddMigrationsApp

{

public partial class WebForm1 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

if

(string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text) || string.IsNullOrEmpty(TextBox3.Text))

{

Label5.Text = "Please Enter Some Values";

Label5.ForeColor = System.Drawing.Color.Red;

}

else

{

var addStudent = new Student

{

FirstName = TextBox1.Text,

LastName = TextBox2.Text,

Age = Convert.ToInt32(TextBox3.Text)

};

objContext.Students.Add(addStudent);

objContext.SaveChanges();

Label5.Text = "Data Successfully Inserted";

Label5.ForeColor = System.Drawing.Color.Green; TextBox1.Text = string.Empty;

TextBox2.Text = string.Empty; TextBox3.Text = string.Empty;

}

}

#region Instance MembersStudentContext objContext = new StudentContext();

#endregion

}

}

Step 6: The output of the application looks like this:

Step 7: The inserted data output of the application looks like this:

Step 8: The database created output of the application looks like this:

Step 9: The enabling migrations output of the application looks like this:

Step 10: The adding new property migrations output of the application looks like this:

Step 11: The update database migrations output of the application looks like this:

Step 12: The database updated output of the application looks like this:

I hope this article was useful for you.