如何从asp.net中scriptmanager.registerclientscript中编写的javascript确
本文关键字:javascript registerclientscript scriptmanager asp net | 更新日期: 2023-09-27 18:28:57
如何从asp.net中scriptmanager.registerlinkscript中编写的javascript确认框返回值。?
事实上,我想在gridview的文本框的文本更改事件上给出确认框。如果用户单击"是",则我希望更新更改后的值;如果用户单击否,则它应该恢复到旧值。
我的伪代码是这样的:
Protected Sub GridViewCreateInvoice_QuantityTextChanged(ByVal sender As Object, ByVal e As EventArgs)
Dim gr As GridViewRow
Dim i As Boolean
Dim txtqty, txtupdatedQty As TextBox
Dim txtoqty, qty As String
Dim result As MsgBoxResult
'Dim dtPOFulfillmentInfo As DataTable
Try
txtqty = DirectCast(sender, TextBox)
gr = txtqty.NamingContainer
'' txtoqty = GridViewCreateInvoice.Rows(gr.DataItem("originalqty")).ToString()
txtoqty = DataBinder.Eval(gr.DataItem, "originalqty").ToString()
qty = DataBinder.Eval(gr.DataItem, "qty").ToString()
If Not ((txtqty.Text = String.Empty And Not txtqty.Text.Trim = "" And Not txtqty.Text.Contains(" ")) And (txtoqty = String.Empty)) Then
If txtqty.Text > txtoqty Then
ScriptManager.RegisterClientScriptBlock(Page, Me.GetType(), "Confirm Quantity Changed", return confirm("Are you sure you want to continue"), True)
If i = True Then
DataBinder.Eval(gr.DataItem, "qty") = txtqty.Text
Else
txtqty.Text = DataBinder.Eval(gr.DataItem, "qty").ToString()
End If
Else
ScriptManager.RegisterClientScriptBlock(Page, Me.GetType(), "Confirm Quantity Changed", return confirm("Are you sure you want to continue"), True)
If i = True Then
DataBinder.Eval(gr.DataItem, "qty") = txtqty.Text
Else
txtqty.Text = DataBinder.Eval(gr.DataItem, "qty").ToString()
End If
End If
End If
Catch ex As Exception
Common.WriteLog(ex.Message)
Common.WriteLog((ex.StackTrace))
Response.Redirect("~/Error.aspx", False)
End Try
End Sub
我建议不要在TextBox
'TextChanged
事件上发布(AutoPostback=true
)。
相反,我建议在客户端进行所有操作。一种方法是处理onchange
事件以显示javascript confirm
,并在用户单击cancel
:时立即恢复旧值
function confirmUpdate(sender,message){
var update = confirm(message);
if(update){
return true;
}else{
sender.value = sender.defaultValue;
return false;
}
}
文本默认值属性
您可以在GridView
:的RowDataBound
服务器端注册此功能
protected void gridview1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
TextBox txtqty = (TextBox)e.Row.FindControl("txtqty");
txtqty.Attributes.Add("onchange", "return confirmUpdate(this, 'Are you sure you want to continue')");
}
}
I dont know what else logic you had implemented..
its a simple solution may be it helps u..
put a label for e.g lblScript in your page
then simply set its text from server side i.e
lblScript.Text =
"<script> var x=window.confirm('Are you sure you are ok?')
if (x)
window.alert('Good!') //
else
window.alert('Too bad')
</script>";