C# 如何从asp.net中的scriptmanager.RegisterClient脚本中写入的javascript确认框返回值。？

如何从asp.net中的scriptmanager.RegisterClient脚本中写入的javascript确认框返回值

实际上，我想在gridview文本框的文本更改事件上给出确认框。如果用户单击“是”，则我想更新更改的值，如果用户单击“否”，则应恢复为旧值

我的伪代码如下所示：

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

事件上发回（

AutoPostback=true

）

相反，我建议您在客户端完成所有操作。一种方法是处理

onchange

事件，以显示javascript

确认

，并在用户单击

取消

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;
    }
}

您可以在

GridView

的服务器端注册此函数：

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')");
    }
}

我不知道您还实现了什么逻辑。。
这是一个简单的解决方案，可能对你有帮助。。
在页面中添加标签，例如lblScript
然后只需从服务器端设置其文本，即
lblScript.Text=
“var x=window.confirm（'你确定你没事吗？'）
if（x）
window.alert（'Good！'）//
其他的
window.alert（“太糟糕了”）
";    

非常感谢你，蒂姆……我要试试这个……）

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>";