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我有一个更新面板:
<asp:UpdatePanel runat="server" ID="panelFatt">
<ContentTemplate>
<div class="row" runat="server" id="divCFPIva">
<div class="col-md-6">
<div class="form-group">
<label for="txtCF">Codice Fiscale</label>
<asp:TextBox runat="server" ID="txtCF" type="text" MaxLength="16" class="form-control" />
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label for="txtPIVA">Partita IVA</label>
<asp:TextBox runat="server" ID="txtPIVA" type="text" MaxLength="11" class="form-control" />
</div>
</div>
<div class="col-md-12">
<span class="help-inline hidden lblerror" runat="server" id="lblErrorCFPIva"></span>
</div>
</div>
<div class="row">
<div class="col-md-6">
<div class="form-group" runat="server" id="divEmail">
<label for="txtEmail" class="control-label">Email*</label>
<div class="controls">
<asp:TextBox runat="server" TextMode="Email" type="text" ID="txtEmail" class="form-control" />
<span class="help-inline hidden lblerror" runat="server" id="lblErrorEmail"></span>
</div>
</div>
</div>
<div class="col-md-6">
<div class="form-group" runat="server" id="divTelefono">
<label for="txtTelefono" class="control-label">Recapito Telefonico*</label>
<div class="controls">
<asp:TextBox runat="server" ID="txtTelefono" type="text" TextMode="Phone" class="form-control" />
<span class="help-inline hidden lblerror" runat="server" id="lblErrorTelefono"></span>
</div>
</div>
</div>
</div>
<!-- /Row -->
<div class="form-group">
<asp:RadioButton runat="server" ID="radioScegliIndirizziFatt" Text=" Scegli tra uno dei tuoi indirizzi" AutoPostBack="true" OnCheckedChanged="radioScegliIndirizziFatt_CheckedChanged" Checked="true" GroupName="radioIndirizziFatt" />
<div class="form-group" runat="server" id="divScegliIndirizzoFatt">
<asp:DropDownList runat="server" ID="ddlIndirizziFatt" class="form-control"></asp:DropDownList>
<span class="help-inline hidden lblerror" runat="server" id="lblErrorScegliIndirizziFatt"></span>
</div>
<br />
<asp:RadioButton runat="server" ID="radioNuovoIndirizzoFatt" Text=" Inserisci un nuovo Indirizzo" AutoPostBack="true" OnCheckedChanged="radioNuovoIndirizzoFatt_CheckedChanged" GroupName="radioIndirizziFatt" />
<div class="form-group" runat="server" id="divNomeFatt">
<label for="txtNomeFatt" class="control-label">Nome o Ragione Sociale*</label>
<div class="controls">
<asp:TextBox runat="server" ID="txtNomeFatt" type="text" class="form-control" />
<span class="help-inline hidden lblerror" runat="server" id="lblErrorNomeFatt"></span>
</div>
</div>
<div class="form-group" runat="server" id="divIndirizzoFatt">
<label for="txtIndirizzoFatt" class="control-label">Indirizzo*</label>
<div class="controls">
<asp:TextBox runat="server" ID="txtIndirizzoFatt" type="text" class="form-control" />
<span class="help-inline hidden lblerror" runat="server" id="lblErrorIndirizzoFatt"></span>
</div>
</div>
<div class="row">
<div class="col-md-5">
<div class="form-group" runat="server" id="divStatoFatt">
<label for="ddlStatoFatt" class="control-label">Stato</label>
<div class="controls">
<asp:DropDownList runat="server" ID="ddlStatoFatt" OnSelectedIndexChanged="ddlStatoFatt_SelectedIndexChanged" class="form-control" AutoPostBack="true" />
</div>
</div>
</div>
<div class="col-md-7">
<div class="form-group" runat="server" id="divProvinciaFatt" visible="false">
<label runat="server" id="lblProvinciaFatt" for="ddlProvinciaFatt" class="control-label">Provincia</label>
<div class="controls">
<asp:DropDownList runat="server" ID="ddlProvinciaFatt" class="form-control" OnSelectedIndexChanged="ddlProvinciaFatt_SelectedIndexChanged" AutoPostBack="true" />
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-8" runat="server" id="divCittaFatt">
<div class="form-group">
<label runat="server" id="lblCittaFatt" for="txtCittaFatt" class="control-label">Città*</label>
<div class="form-group" runat="server" id="divDDLFatt" visible="false">
<asp:DropDownList runat="server" ID="ddlCittaFatt" class="form-control" OnSelectedIndexChanged="ddlCittaFatt_SelectedIndexChanged" AutoPostBack="true" />
</div>
<br />
<div class="form-group" runat="server" id="divTXTFatt" visible="false">
<asp:TextBox runat="server" ID="txtCittaFatt" type="text" class="form-control" />
</div>
<span class="help-inline hidden lblerror" runat="server" id="lblErrorCittaFatt"></span>
</div>
</div>
<div class="col-md-4" runat="server" id="divCAPFatt">
<div class="form-group">
<label for="txtCAPFatt" class="control-label">CAP*</label>
<div class="controls">
<asp:TextBox runat="server" ID="txtCapFatt" type="text" class="form-control" />
<span class="help-inline hidden lblerror" runat="server" id="lblErrorCAPFatt"></span>
</div>
</div>
</div>
</div>
</div>
</ContentTemplate>
</asp:UpdatePanel>
我正在尝试触发一个 UpdateProgress,我希望在 UpdatePanel 内的控件的每个回发中显示加载图像。
<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="panelFatt">
<ProgressTemplate>
<div class="modal">
<div class="center">
<img alt="" src="http://i.stack.imgur.com/FhHRx.gif" />
</div>
</div>
</ProgressTemplate>
</asp:UpdateProgress>
这根本不起作用。我在 Internet 上看到有人将客户端方法与单击更新面板中的按钮相关联。但我应该为所有在我的更新面板中回发的控件执行此操作。
有没有办法让它发挥作用?
我以这种方式修改了我的代码:
<asp:UpdatePanel runat="server" ID="panelFatt" UpdateMode="Conditional">
<ContentTemplate>
<div class="row">
<div class="col-md-6">
<h4>
<asp:CheckBox runat="server" ID="checkFattura" Text="Desidero ricevere la Fattura" AutoPostBack="true" OnCheckedChanged="checkFattura_CheckedChanged" CssClass="checkbox-inline cssRadio" /></h4>
</div>
</div>
<br />
<div class="row" runat="server" id="divCFPIva">
<div class="col-md-6">
<div class="form-group">
<label for="txtCF" runat="server" id="lblCF" visible="false">Codice Fiscale</label>
<asp:TextBox runat="server" ID="txtCF" type="text" MaxLength="16" class="form-control" Visible="false" />
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label for="txtPIVA" runat="server" id="lblPIva" visible="false">Partita IVA</label>
<asp:TextBox runat="server" ID="txtPIVA" type="text" MaxLength="11" class="form-control" Visible="false" />
</div>
</div>
<div class="col-md-12">
<span class="help-inline hidden lblerror" runat="server" id="lblErrorCFPIva"></span>
</div>
</div>
<div class="row">
<div class="col-md-6">
<div class="form-group" runat="server" id="divEmail">
<label for="txtEmail" class="control-label">Email*</label>
<div class="controls">
<asp:TextBox runat="server" TextMode="Email" type="text" ID="txtEmail" class="form-control" />
<span class="help-inline hidden lblerror" runat="server" id="lblErrorEmail"></span>
</div>
</div>
</div>
<div class="col-md-6">
<div class="form-group" runat="server" id="divTelefono">
<label for="txtTelefono" class="control-label">Recapito Telefonico*</label>
<div class="controls">
<asp:TextBox runat="server" ID="txtTelefono" type="text" TextMode="Phone" class="form-control" />
<span class="help-inline hidden lblerror" runat="server" id="lblErrorTelefono"></span>
</div>
</div>
</div>
</div>
<!-- /Row -->
<div class="form-group">
<div runat="server" id="divNotVisibleFatt">
<asp:RadioButton runat="server" ID="radioScegliIndirizziFatt" Text=" Scegli tra uno dei tuoi indirizzi" AutoPostBack="true" OnCheckedChanged="radioScegliIndirizziFatt_CheckedChanged" Checked="true" GroupName="radioIndirizziFatt" />
<div class="form-group" runat="server" id="divScegliIndirizzoFatt">
<asp:DropDownList runat="server" ID="ddlIndirizziFatt" class="form-control"></asp:DropDownList>
<span class="help-inline hidden lblerror" runat="server" id="lblErrorScegliIndirizziFatt"></span>
</div>
<br />
<asp:RadioButton runat="server" ID="radioNuovoIndirizzoFatt" Text=" Inserisci un nuovo Indirizzo" AutoPostBack="true" OnCheckedChanged="radioNuovoIndirizzoFatt_CheckedChanged" GroupName="radioIndirizziFatt" />
</div>
<div class="form-group" runat="server" id="divNomeFatt">
<label for="txtNomeFatt" class="control-label">Nome o Ragione Sociale*</label>
<div class="controls">
<asp:TextBox runat="server" ID="txtNomeFatt" type="text" class="form-control" />
<span class="help-inline hidden lblerror" runat="server" id="lblErrorNomeFatt"></span>
</div>
</div>
<div class="form-group" runat="server" id="divIndirizzoFatt">
<label for="txtIndirizzoFatt" class="control-label">Indirizzo*</label>
<div class="controls">
<asp:TextBox runat="server" ID="txtIndirizzoFatt" type="text" class="form-control" />
<span class="help-inline hidden lblerror" runat="server" id="lblErrorIndirizzoFatt"></span>
</div>
</div>
<div class="row">
<div class="col-md-5">
<div class="form-group" runat="server" id="divStatoFatt">
<label for="ddlStatoFatt" class="control-label">Stato</label>
<div class="controls">
<asp:DropDownList runat="server" ID="ddlStatoFatt" OnSelectedIndexChanged="ddlStatoFatt_SelectedIndexChanged" class="form-control" AutoPostBack="true" />
</div>
</div>
</div>
<div class="col-md-7">
<div class="form-group" runat="server" id="divProvinciaFatt" visible="false">
<label runat="server" id="lblProvinciaFatt" for="ddlProvinciaFatt" class="control-label">Provincia</label>
<div class="controls">
<asp:DropDownList runat="server" ID="ddlProvinciaFatt" class="form-control" OnSelectedIndexChanged="ddlProvinciaFatt_SelectedIndexChanged" AutoPostBack="true" />
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-8" runat="server" id="divCittaFatt">
<div class="form-group">
<label runat="server" id="lblCittaFatt" for="txtCittaFatt" class="control-label">Città*</label>
<div class="form-group" runat="server" id="divDDLFatt" visible="false">
<asp:DropDownList runat="server" ID="ddlCittaFatt" class="form-control" OnSelectedIndexChanged="ddlCittaFatt_SelectedIndexChanged" AutoPostBack="true" />
</div>
<br />
<div class="form-group" runat="server" id="divTXTFatt" visible="false">
<asp:TextBox runat="server" ID="txtCittaFatt" type="text" class="form-control" />
</div>
<span class="help-inline hidden lblerror" runat="server" id="lblErrorCittaFatt"></span>
</div>
</div>
<div class="col-md-4" runat="server" id="divCAPFatt">
<div class="form-group">
<label for="txtCAPFatt" class="control-label">CAP*</label>
<div class="controls">
<asp:TextBox runat="server" ID="txtCapFatt" type="text" class="form-control" />
<span class="help-inline hidden lblerror" runat="server" id="lblErrorCAPFatt"></span>
</div>
</div>
</div>
</div>
</div>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="checkFattura" EventName="CheckedChanged"/>
<asp:AsyncPostBackTrigger ControlID="radioScegliIndirizziFatt" EventName="CheckedChanged"/>
<asp:AsyncPostBackTrigger ControlID="radioNuovoIndirizzoFatt" EventName="CheckedChanged"/>
<asp:AsyncPostBackTrigger ControlID="ddlStatoFatt" EventName="SelectedIndexChanged"/>
<asp:AsyncPostBackTrigger ControlID="ddlProvinciaFatt" EventName="SelectedIndexChanged"/>
<asp:AsyncPostBackTrigger ControlID="ddlCittaFatt" EventName="SelectedIndexChanged"/>
</Triggers>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="panelFatt">
<ProgressTemplate>
<div class="modal">
<div class="center">
<img alt="" src="/image/FhHRx.gif" />
</div>
</div>
</ProgressTemplate>
</asp:UpdateProgress>
但即使不工作..
我的数据在 Page_Load 中绑定(bind)
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
// Combo Province
DataTable dtProv = oTabelle.GetDTProvinceByIdStato(IdStatoITA);
oUty.loadDDL(ref ddlProvinciaFatt, dtProv, "IdProvincia", "NomeProvincia", "", "", "");
ddlProvinciaFatt.SelectedValue = "";
...
}
}
我的相关事件如下
protected void ddlProvinciaFatt_SelectedIndexChanged(object sender, EventArgs e)
{
txtCapFatt.Text = "";
string idProvincia = ddlProvinciaFatt.SelectedValue;
// carico i comuni della provincia
oUty.loadDDL(ref ddlCittaFatt, oTabelle.GetDTComuniByIdProvincia(idProvincia), "IdComune", "NomeComune", "", "", "", true);
ddlCittaFatt.SelectedIndex = -1;
}
我哪里错了?
最佳答案
用于在 UpdatePanel 中的控件的每个 PostBack 上显示 UpdateProgress:
UpdateMode
设置为 Conditional
:手动触发 AsyncPostBackTrigger
到您在 UpdatePanel 中的控件,并提供将触发的 ControlID
和 EventName
:
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" >
</ContentTemplate>
<!-- Some other controls that perform post back -->
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ddlStatoFatt"
EventName="SelectedIndexChanged" />
</Triggers>
</asp:UpdatePanel>
并且可以使用 System.Threading.Thread.Sleep(3000);
测试其在事件中的工作情况:
protected void ddlStatoFatt_SelectedIndexChanged(object sender, EventArgs e)
{
// delay it for testing
System.Threading.Thread.Sleep(3000);
Label1.Text = "Page refreshed with DropDownList at " +
DateTime.Now.ToString();
}
我已经在我的网站上尝试过这个并且它有效:
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" >
<ContentTemplate>
<fieldset>
<legend>UpdatePanel1</legend>
<asp:Label ID="Label1" runat="server" Text="Panel initially rendered."></asp:Label>
<br />
<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True"
OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">
<asp:ListItem Value="1">Choose</asp:ListItem>
<asp:ListItem Value="2">Blue</asp:ListItem>
<asp:ListItem Value="3">Green</asp:ListItem>
</asp:DropDownList>
<br />
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
</fieldset>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="DropDownList1" EventName="SelectedIndexChanged" />
<asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress" runat="server" AssociatedUpdatePanelID="UpdatePanel1">
<ProgressTemplate>
Panel2 updating....
</ProgressTemplate>
</asp:UpdateProgress>
和代码隐藏:
protected void Button1_Click(object sender, EventArgs e)
{
// Introducing delay for demonstration.
System.Threading.Thread.Sleep(3000);
Label1.Text = "Page refreshed at " +
DateTime.Now.ToString();
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
// Introducing delay for demonstration.
System.Threading.Thread.Sleep(3000);
Label1.Text = "Page refreshed with DDL at " +
DateTime.Now.ToString();
}
关于c# - UpdateProgress 不会在 UpdatePanel 内的每个 PostBack 控件上触发,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46202275/
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