<asp:TextBox runat="server" ID="txt" class="form-control" onkeypress="return textonly(event,this);"></asp:TextBox>
//Enter text only
function textonly(e, obj) {
var code;
if (!e) var e = window.event;
if (e.keyCode) code = e.keyCode;
else if (e.which) code = e.which;
var character = String.fromCharCode(code);
var AllowRegex = /^[\ba-zA-Z\s-]$/;
if (AllowRegex.test(character)) {
return true;
}
return false;
}
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