Member Avatar for adrianSigamoney

I have 10 textboxes eg:
textbox1
textbox2
textbox3
textbox4
textbox5
textbox6
textbox7
textbox8
textbox9
textbox10

How can I get the name of TextBox eg textbox3 when user clicks (Mouse) on it. The textboxes are on a asp.net web page. Its written in VB.Net.

Edited by adrianSigamoney because: n/a
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  • Latest Post Latest Post by sgt_toasty

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The simplest approach depends on whether you need the clicked textbox only on the client or back on the server.

As hinted, detecting the click without a round‑trip needs client code; as noted, this is an ASP.Net page so you can wire client handlers from VB.Net if you prefer. A robust client‑side pattern is event delegation (no need to attach handlers to each control):

document.getElementById('container').addEventListener('click', function(e) {
  var t = e.target || e.srcElement;
  if (t && t.tagName === 'INPUT' && t.type === 'text') {
    var nameOrId = t.id || t.name;
    console.log('clicked:', nameOrId);
  }
});

If you want the click to be initiated from server code (for example to record which textbox and then post back), add a client attribute from VB.Net so each rendered input calls the same JS function:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
  If Not IsPostBack Then
    For i As Integer = 1 To 10
      Dim tb = CType(FindControl("TextBox" & i), TextBox)
      If tb IsNot Nothing Then tb.Attributes("onclick") = "onTextboxClick(this);"
    Next
  End If
End Sub

and in JS:

function onTextboxClick(el) {
  document.getElementById('<%= HiddenClicked.ClientID %>').value = el.id || el.name;
  __doPostBack('<%= HiddenClicked.UniqueID %>', '');
}

Troubleshooting notes: ASP.Net may change client IDs (use the control's ClientID in script or assign a CSS class to target inputs). If you only need server-side handling on change, consider AutoPostBack="true" and handle TextChanged so the sender gives you the server ID directly.

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Member Avatar for ArtistScope

Please post in the ASP.Net forum

Member Avatar for sgt_toasty

Adrian - you cannot have events fire when the user clicks a control (such as a textbox) using vb.net. You would need to use javascript's OnClick event.

document.getElementById(textboxX).onfocus
{
Do stuff in here!
}

The reason for this is because vb.net only "fires" when the webpage communicates directly with the server. Javascript enables client side events - events that occur without the page needing to talk with the server.

Edited by sgt_toasty because: n/a
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