Dialog result box in ASP.NET

Question

1.00/5 (4 votes)

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Can I use this Code as it is in Asp.net , I mean Can I Use Dialog Result and Message box in Asp.net??

What I have tried:

DialogResult Dialog = MessageBox.Show(" The File is Already exist , Do you want to replace it?", Name, MessageBoxButtons.YesNo);
                if (Dialog == DialogResult.Yes)
                {

                    SqlCommand cmdupdate = new SqlCommand("update Attcehments set Data=@Data,Semester='" + semester + "' where AttchName='" + Name + "'and CourseNum='" + course_number + "'", connection);
                    cmdupdate.Parameters.Add("@Data", SqlDbType.Binary).Value = bytes;
                    cmdupdate.ExecuteNonQuery();
                    lblMessage.Text = "Updated Successfully";
                }
                else { lblMessage.Text = "Not updated!!"; }//end else

            }//end if
            else
            {
                //insert the file into database

                string strQuery = "insert into Attcehments(AttchName, CourseNum,Semester, Data,Priority)  values ('" + Name + "','" + course_number + "','" + semester + "', @Data,'" + priority + "')";
                SqlCommand cmdinsert = new SqlCommand(strQuery, connection);
                cmdinsert.Parameters.Add("@Data", SqlDbType.Binary).Value = bytes;
                cmdinsert.ExecuteNonQuery();
                lblMessage.Text = "File Uploaded Successfully";



            }

Posted 1-Apr-17 7:26am

Rawan Mansourr

Updated 2-Apr-17 6:06am

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Comments

[no name] 1-Apr-17 14:08pm

Sure you can use a messagebox. If, and only if, you have someone sitting in front of the webserver computer willing and able to sit there and wait for it to popup and click the Ok button which your user will never see.

Rawan Mansourr 1-Apr-17 14:42pm

what I can use instead of these Message box and dialog result?

3 solutions

Solution 3

aspx:

<asp:LinkButton ID="ModalDummy" runat="server" />
<ajaxToolkit:ModalPopupExtender ID="ModalDummy_ModalPopupExtender" runat="server" BehaviorID="ModalDummy_ModalPopupExtender" TargetControlID="ModalDummy" PopupControlID="PanelPopup">
</ajaxToolkit:ModalPopupExtender>
<asp:Panel ID="PanelPopup" runat="server" DefaultButton="ButtonContactSend">
    your popup
</asp:Panel>

code behind

ModalDummy_ModalPopupExtender.Show();

Posted 2-Apr-17 6:05am

Stein The Ruler

Comments

Rawan Mansourr 2-Apr-17 12:10pm

that's a rich answer ,thank you

Stein The Ruler 2-Apr-17 12:21pm

its just to show you that you don't have to use any javascript and keep it all .net

Rawan Mansourr 2-Apr-17 12:53pm

ok , that's fine.but it is give Unrecognized prefix ajaxtoolkit and the modalpopuo does not exist

Stein The Ruler 2-Apr-17 13:25pm

you can install it using nuget manager. command: Install-Package AjaxControlToolkit

Rawan Mansourr 2-Apr-17 13:34pm

ok ,nice , thank you

Solution 1

You cannot use MessageBox in an ASP.NET app. Sure, it works on your machine. Deploy this to an actual web server and your code will sit there waiting for input that will never happen as the MessageBox will show up on a desktop on the SERVER, NOT THE CLIENT. Even if you log into the server console, you still won't see the MessageBox. It'll show up on a desktop that is not visible to the logged in user.

You're code needs to be completely overhauled to remove all these references to MessageBox and DialogResult. They have no meaning in an ASP.NET app.

Posted 1-Apr-17 8:25am

Dave Kreskowiak

Comments

Rawan Mansourr 1-Apr-17 14:41pm

ok , what I can use instead of these message box, and dialog box ?

Dave Kreskowiak 1-Apr-17 16:41pm

You have to do that stuff in your client-side javascript code. I don't know what you're doing but from what you posted, your client code isn't going to know anything about any files already existing.

Stein The Ruler 2-Apr-17 2:49am

I normally use ModalPopupExtender in the Ajax Control Toolkit

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Karthik_Mahalingam · Accepted Answer · 2017-04-01T19:58:00

Solution 2

You cannot use MessageBox result in Asp.net, it shall be replaced by confirm() function [^] in javascript, provided you will have to take care of your business logic and knowing how Asp page life cycle[^] works

Mark up

<asp:Button ID="Button1" OnClientClick="funCheck()" runat="server" Text="Button" OnClick="Button1_Click" />
    <asp:HiddenField ID="HiddenField1" runat="server" />

Javascript

function funCheck() {
          var flag = confirm('The File is Already exist , Do you want to replace it?');
          var hdnfld = document.getElementById('<%= HiddenField1.ClientID %>');
          hdnfld.value = flag ? '1' : '0';
      }

Code behind

protected void Button1_Click(object sender, EventArgs e)
       {
           if (HiddenField1.Value == "1")
           {
               // do some action
           }
           else
           {
               // do other action
           }
       }

Posted 1-Apr-17 19:58pm

Karthik_Mahalingam

Comments

Rawan Mansourr 2-Apr-17 11:14am

It is working , Thank you very much.

Rawan Mansourr 2-Apr-17 11:15am

but ,please I have a question ; what the best syntax to show the alert in asp.net pages?, now I am using script message , it is well or no?

Karthik_Mahalingam 2-Apr-17 11:19am

there is only one syntax for alert();
there is nothing called as best syntax
what is script message?

Rawan Mansourr 2-Apr-17 11:23am

Thats it
string script = "alert(\"Coordinator Already Exsist\");";
ScriptManager.RegisterStartupScript(this, GetType(),
"ServerControlScript", script, true);

the second :
Response.Write("alert('please select the course and the Semester From Main page First!!');window.location='MainPage.aspx';");

Karthik_Mahalingam 2-Apr-17 11:28am

you should use the first one..

the second one will just display as text.
test it and see how it works.

Rawan Mansourr 2-Apr-17 11:33am

it works but not in the properly way , you mean to use the first one? , and the last question , how can I use the redirect or windows location if I use the first way , and thank you.

Karthik_Mahalingam 2-Apr-17 11:35am

string script = "alert('Coordinator Already Exsist'); window.location='yoururl.aspx'";
ScriptManager.RegisterStartupScript(this, GetType(),
"ServerControlScript", script, true);

Rawan Mansourr 2-Apr-17 12:05pm

it worked , Thank you

Karthik_Mahalingam 2-Apr-17 12:09pm

Welcome

Rawan Mansourr 2-Apr-17 13:23pm

Please sir I have a question , when I use Script manager in the page load , every time I click to the page it is show , I need to show it once time , any way to do that? and thank you

Karthik_Mahalingam 2-Apr-17 21:10pm

Use page.ispostback condition