RequiredField Validation in visual studio 2013

Question

User1441157511 posted

I used a required field validation control to validate a textbox using the following lines of codes

<asp:Label ID="Label25" runat="server" Text="School"></asp:Label>
<asp:TextBox ID="schl" runat="server" Width ="320px"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="*" ControlToValidate="schl" Text="*"></asp:RequiredFieldValidator>

<asp:Button ID="addschool" runat="server" Text="Add" CssClass="button" BackColor="#333333" BorderColor="Silver" OnClick="addschool_Click" BorderWidth="2px" Width="150px" />

this is the back code of the button

protected void addschool_Click(object sender, EventArgs e)
        {
            try
            {
                if (Page.IsValid)
                {
                    error.Text = "";
                    MySqlConnection conn = new MySqlConnection(connection);
                    MySqlCommand addschool = new MySqlCommand("insert into pla20132014.schools (Departments, Schools) values(@dept, @schl)", conn);
                    MySqlDataReader read;
                    conn.Open();
                    addschool.Parameters.Add("@dept", MySqlDbType.VarChar).Value = dept.Text;
                    addschool.Parameters.Add("@schl", MySqlDbType.VarChar).Value = schl.Text;
                    read = addschool.ExecuteReader();
                    read.Close();
                    conn.Close();
                    error.ForeColor = Color.Green;
                    error.Text = "Upload Successful";

                }
            }
            catch(MySqlException myex)
            {
                error.Text = myex.Message;
            }
            catch(Exception ex)
            {
                error.Text = "/n " + ex.Message;
            }
        }

but i receive the following error in stack trace

[InvalidOperationException: WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery'. Please add a ScriptResourceMapping named jquery(case-sensitive).]
   System.Web.UI.ClientScriptManager.EnsureJqueryRegistered() +2287754
   System.Web.UI.WebControls.BaseValidator.RegisterUnobtrusiveScript() +10
   System.Web.UI.WebControls.BaseValidator.OnPreRender(EventArgs e) +9831213
   System.Web.UI.Control.PreRenderRecursiveInternal() +83
   System.Web.UI.Control.PreRenderRecursiveInternal() +155
   System.Web.UI.Control.PreRenderRecursiveInternal() +155
   System.Web.UI.Control.PreRenderRecursiveInternal() +155
   System.Web.UI.Control.PreRenderRecursiveInternal() +155
   System.Web.UI.Control.PreRenderRecursiveInternal() +155
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +974

i really don't know what is wrong because i use same code in visual studio 2010 and it works perfectly. Thanks for your assistance

Answer 1

User2024324573 posted

Do you have jquery.validate.js installed and reference in your page? 

Answer 2

User1441157511 posted
i have just downloaded the jQuery 2.1.4 package but can't find it in my add reference. am i looking in the wrong place or i am not doing the right thing?

Answer 3

User2024324573 posted

You need to add it to BundleConfig.cs in App_Start folder, please follow the way how other packages are added there. 

Answer 4

User1441157511 posted

i'm using the c# language. there is no App_Start folder in my project because i created it from scratch. so i don't kn how to implement that. Thanks

Answer 5

User2024324573 posted

Well, to get the idea how the files are created and organized in App_Start folder do the following steps:

• Create a new MVC Web Site project (Don't select the Empty template)
• When the project has been created, open the solution explorer and find App_Start folder and you will see there are 5 file (.cs) files there. 
• One of them is BundleConfig.cs, open file and see what is there, bundled packages for js, css and other files from the folders of your project.
• The bundle names are being called in your .Layout.cshtml files so that all the pages are rendered with the scripts added as bundles.

Hope this will help.