I have an aspx page with a button on it. When the user clicks on a button, i have to run some c# code in a seperate .cs file. What is the way to do this? Currently i have a way of using form.action to forward the request to another aspx page but is there a way to run c # code upon a button press?
Thanks
Use event handlers
Ex:
<asp:Button id="b1" runat="server" OnClick="b1_OnClick"/>
Code behind:
protected void b1_OnClick(object sender, EventArgs e)
{
//call your .cs file code here
}
You can drop your .cs file into an App_Code directory and ought to be able to call accessible methods within that code without needing to reference an external assembly.
It can be accomplished in below way:
<asp:Button id="btnTarget" runat="server" Text="Target" OnClick="btnTarget_OnClick"/>
//First put the namespace of your target class in using block
protected void btnTarget_OnClick(object sender, EventArges e)
{
//Target.NameSpace.TargetClass target = new Target.NameSpace.TargetClass(); // without using namespace in using blcok
TargetClass target = new TargetClass(); // you can use direct Namespece here
target.TargetMethod();
}
Put your code of TargetClass in App_Code folder which will be available around the application, the TargetClass should be public access modifier.
public partial class WebForm2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected override void OnInit(EventArgs e)
{
Button b = new Button();
b.ID = "Button" + i;
b.Text = "Button" + i;
b.Click += new EventHandler(b_Click);
form1.Controls.Add(b);
}
}
public partial class WebForm2 : System.Web.UI.Page
{
void b_Click(object sender, EventArgs e)
{
//some code
}
}
ASP.NET works in an event-driven model. Whatever the actions performed by an user whether it is a button click or some other which can be listened by an event-handler that will be located in the code-behind of the aspx page.
You can put all the code in the event-handler or you can call other class methods from the event-handler and do whatever you want.
