Develop Reference

AsyncFileUpload in Repeater in UpdatePanel

The AsyncFileUpload works. Only issue is the file name disappears when the LinkButton to repeat the AsyncFileUpload control is pressed. Is there a way to get and store the file name? FileName does not work. Not really keen on sharing code-behind but may do so if it is necessary to solve this issue.
<asp:UpdatePanel ID="LibraryResourceUpdatePanel" runat="server">
<ContentTemplate>
<div class="field-group list-of-resource">
<asp:Repeater ID="RptRequest" runat="server" OnItemDataBound="RptRequest_ItemDataBound">
<ItemTemplate>
<div class="resource">
<div class="remove-input">
<asp:LinkButton ID="LbRemoveRequest" CssClass="ic fa fa-minus-circle" runat="server" OnClick="LbRemoveRequest_Click" CausesValidation="false"></asp:LinkButton>
<span>Remove</span>
</div>
<h2>Details of Resources
<span class="counter">
<asp:Literal ID="LitCount" runat="server"></asp:Literal>
</span>
</h2>
<ul>
<li>
<fieldset class="form-group">
<legend>Accession No.</legend>
<asp:TextBox ID="TxbAccessionNumber" CssClass="form-control" runat="server" />
<asp:RequiredFieldValidator runat="server" ControlToValidate="TxbAccessionNumber" ErrorMessage="Email is required" ForeColor="Red" Display="Dynamic" />
</fieldset>
</li>
<li>
<fieldset class="form-group">
<legend>Details</legend>
<asp:TextBox ID="TxbDetails" runat="server" Rows="4" TextMode="MultiLine" />
<asp:RequiredFieldValidator runat="server" ControlToValidate="TxbDetails" ErrorMessage="Details are required" ForeColor="Red" Display="Dynamic" />
</fieldset>
</li>
<li>
<fieldset class="form-group">
<legend>Image</legend>
<ajaxToolkit:AsyncFileUpload runat="server"
ID="FileUpload" OnUploadedComplete="FileUpload_UploadedComplete" ClientIDMode="AutoID" PersistFile="true"/>
<asp:RequiredFieldValidator runat="server" ControlToValidate="FileUpload" ErrorMessage="File Upload required" ForeColor="Red" Display="Dynamic" />
</fieldset>
</li>
</ul>
</div>
</ItemTemplate>
</asp:Repeater>
</div>
<div class="add-input">
<asp:LinkButton ID="LbAddRequest" CssClass="ic fa fa-plus-circle" runat="server" OnClick="LbAddRequest_Click" CausesValidation="false" ></asp:LinkButton>
<span>Add another request</span>
</div>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="LbAddRequest" EventName="click" />
</Triggers>
</asp:UpdatePanel>

First add command name to linkbutton and remove click event:
<asp:LinkButton ID="LbAddRequest" runat="server"
CommandName="AddRequest"></asp:LinkButton>
<span>Add another request</span>
And try this ItemCommand event in code-behind to get in work:
protected void RptRequest_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.CommandName == "AddRequest")
{
FileUpload myFileUpload = (FileUpload)e.Item.FindControl("FileUpload");
if (myFileUpload.HasFile)
{
try
{
string filename = Path.GetFileName(myFileUpload.FileName);
myFileUpload.SaveAs(Server.MapPath("~/") + filename);
myStatusLabel.Text = "Upload Success";
}
catch (Exception ex)
{
myStatusLabel.Text = "Upload Fail" + ex.Message;
}
}
else
{
myStatusLabel.Text = "myFileUpload Has No File";
}
}
}
Read detail here : https://forums.asp.net/t/1904302.aspx?FileUpload+Inside+a+Repeater+Can+t+Find+File

how to access controls in ListView EditItemTemplate

I have a problem with EditItemTemplate.
I'm using Telerik RadUpload in asp listView.
In validating Event of radUpload, I want to check some Requirements so I need to findControl two control: radUpload and Label
For this I am using ItemDataBound Event of listView
but the problem is here, first ItemDataBound event execute and after that RadUpload Validating event will execute, therefor the radUpload Control and Label control remain empty
I handle this in a way by using static control, but i think that is not good idea.
Do you have a solution for that?
Another problem is with label. However I using static label and in trace shows the label have text but in output label not seen
<asp:ListView ID="LvAdminRing" runat="server" ItemPlaceholderID="ItemPlaceHolder" GroupPlaceholderID="GroupPlaceHolder"
OnItemEditing="LvAdminRing_ItemEditing" OnItemDataBound="onItemDataBound" OnItemUpdating="LvAdminRing_ItemUpdating">
<LayoutTemplate>
<div>
<asp:PlaceHolder runat="server" ID="GroupPlaceHolder"></asp:PlaceHolder>
</div>
</LayoutTemplate>
<GroupTemplate>
<div>
<asp:PlaceHolder runat="server" ID="ItemPlaceHolder"></asp:PlaceHolder>
</div>
</GroupTemplate>
<ItemTemplate>
<div class="RadRingTileDIV col-lg-12" runat="server">
<div class="row RadRingItemsDIV">
<asp:Label ID="lblPrice" CssClass="CustDispBlock CustItemFonts" runat="server" Text='<%# Eval("XPrice")%>'></asp:Label>
<asp:Label ID="lblCode" CssClass="CustDispBlock CustItemFonts" runat="server" Text='<%# Eval("XCode") %>'></asp:Label>
</div>
<div class="row RadRingItemsDIV ">
<asp:ImageButton ID="ImgRingEdit" runat="server" CommandName="Edit" ImageUrl="~/Image/Admin/CommandsPic/Edit.gif" />
<asp:ImageButton ID="ImgRingDel" runat="server" CommandName="Delete" ImageUrl="~/Image/Admin/CommandsPic/Delete.gif" />
</div>
</div>
</ItemTemplate>
<EditItemTemplate>
<div class="RadRingTileDIV col-lg-12" runat="server">
<div class="RadRingItemsDIV row">
<img src="ksdla" class="AdminImg CustDispBlock" />
<telerik:RadUpload ID="RupAdminRingPic" runat="server" AllowedFileExtensions=".png,.jpg,.jpeg,.jpe" AllowedMimeTypes="image/png,image/x-png,image/jpeg,image/pjpeg"
MaxFileInputsCount="1" MaxFileSize="52000" OverwriteExistingFiles="False" TargetFolder="~/Image/Products/Ring"
OnValidatingFile="RupAdminRingPic_ValidatingFile" ToolTip="انتخاب عکس جدید با پسوند های png،jpg،jpeg و jpe" ControlObjectsVisibility="CheckBoxes">
</telerik:RadUpload>
</div>
<div class="row RadRingItemsDIV">
<br />
<asp:Button ID="Button1" runat="server" Text="test" CommandName="Update" />
</div>
<div class="row RadRingItemsDIV">
<br />
<asp:Label ID="LblError" CssClass="CustDispBlock CustZ-Index" Visible="false" runat="server" Text=""></asp:Label>
</div>
</div>
</EditItemTemplate>
</asp:ListView>
public static Label lblError;
public static RadUpload RuEditPic;
public static Label lblError;
protected void RupAdminRingPic_ValidatingFile(object sender, Telerik.Web.UI.Upload.ValidateFileEventArgs e)
{
//Label test = (Label)LvItems.FindControl("LblError");
string[] AllowedFileExt = RuEditPic.AllowedFileExtensions;
foreach ( string AllowedExt in AllowedFileExt )
{
if (e.UploadedFile.ContentLength > RuEditPic.MaxFileSize)
{
lblError.Text = "some error";
lblError.Visible = true;
}
}
}
protected void onItemDataBound(object sender, ListViewItemEventArgs e)
{
int x = (e.Item as ListViewDataItem).DataItemIndex;
if (LvAdminRing.EditIndex == (e.Item as ListViewDataItem).DataItemIndex)
{
LvItems = LvAdminRing.Items as ListViewDataItem;
lblError = (e.Item.FindControl("LblError") as Label);
//errNoti = (e.Item.FindControl("LblError") as Label);
RuEditPic = (e.Item.FindControl("RupAdminRingPic") as RadUpload);
}
}

You should try this.
protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
{
if (e.Item.ItemType == ListViewItemType.DataItem)
{
ListViewDataItem dataItem = (ListViewDataItem)e.Item;
if (dataItem.DisplayIndex == ListView1.EditIndex)
{
TextBox tb = e.Item.FindControl("tbFK_MenuID") as TextBox;
}
}
}

Why Rowcommand event of a gridview is not getting fired ?

I am facing a kind of weird problem.
Problem:
When I click a link button inside a grid view then RowCommand event of a grid view is getting fired when deployed on a localhost but not when deployed on the IIS i.e. client system. I have also tried a link button inside grid view but that's also not getting fired.
Solution: (Temporary)
When I disabled ValidateRequest on the top of the .aspx page. It worked.
What should I do?
So what can be the possible solution for it? I have googled but nothing good came up.
Code:
<asp:GridView ID="gvAppliedWorks" runat="server" OnRowCommand="gvAppliedWorks_RowCommand" AutoGenerateColumns="false" DataKeyNames="AppliedWorkID, ContractorID" EmptyDataText="No Data Found"
CssClass="table table-responsive table-bordered table-striped" OnRowDataBound="gvAppliedWorks_RowDataBound">
<Columns>
<asp:TemplateField HeaderText="Form No">
<ItemTemplate>
<asp:Literal ID="liFormNo" runat="server" Text='<% #Eval("FormNo")%>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Company Name">
<ItemTemplate>
<asp:Literal ID="liCompanyName" runat="server" Text='<% #Eval("Name")%>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Financial Bid">
<ItemTemplate>
<asp:Label ID="txtBidAmount" runat="server" CssClass="control-label" Text='<% # string.Format("{0:n2}", Eval("FinancialMoney").ToString())%>' />
%
<asp:Label ID="ddlBidPer" runat="server" CssClass="control-label" Text='<%# Eval("AboveBelow").ToString() %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Awarded Percentage">
<ItemTemplate>
<div class="pull-left">
<asp:HiddenField ID="hdnIsAwarded" Value='<%# Eval("IsAwarded") %>' runat="server" />
<asp:TextBox ID="txtAwardedBid" Text='<%#Eval("AwardedBid")%>' Style="width: 70px !important;" runat="server" CssClass="form-control"></asp:TextBox>
</div>
<div class="pull-left" style="margin-top: 7px">
% <%# Eval("AboveBelow").ToString() %>
</div>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Remarks">
<ItemTemplate>
<asp:TextBox ID="txtRemarks" Text='<%#Eval("Remarks")%>' runat="server" CssClass="form-control"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Award Tender">
<ItemTemplate>
<asp:LinkButton ID="lnkAward" runat="server"
CommandArgument='<%# Eval("AppliedWorkID") %>' CommandName="award"
CssClass="btn btn-sm btn-danger" Enabled='<%# Convert.ToBoolean(Eval("IsBlackList")) == true ? false: true %>'
Visible='<%# Convert.ToBoolean( Eval("IsAwarded"))== false? true:false%>' CausesValidation="false" Text="Award"></asp:LinkButton>
<ajax:ConfirmButtonExtender ID="cbe" runat="server" DisplayModalPopupID="mpe" TargetControlID="lnkAward">
</ajax:ConfirmButtonExtender>
<ajax:ModalPopupExtender ID="mpe" runat="server" PopupControlID="pnlPopup" TargetControlID="lnkAward" OkControlID="btnYes"
CancelControlID="btnNo" BackgroundCssClass="modalBackground">
</ajax:ModalPopupExtender>
<asp:Panel ID="pnlPopup" runat="server" CssClass="modalPopup" Style="display: none">
<div class="header">
Confirmation
</div>
<div class="body">
Are you sure to Award this Work?
</div>
<div class="Popupfooter" align="right">
<asp:Button ID="btnYes" CssClass="btn btn-sm btn-danger" runat="server" Text="Yes" />
<asp:Button ID="btnNo" CssClass="btn btn-sm btn-primary" runat="server" Text="No" />
</div>
</asp:Panel>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText='Action'>
<ItemTemplate>
<asp:LinkButton ID="btnBlackList" runat="server" OnClick="btnBlackList_Click" Visible='<%# Convert.ToBoolean( Eval("IsAwarded"))== false? true:false%>' Enabled='<%# Convert.ToBoolean(Eval("IsBlackList")) == true ? false: true %>' Text='Defective'
CssClass="" ToolTip="Blacklist"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
**.cs**
protected void gvAppliedWorks_RowCommand(object sender, GridViewCommandEventArgs e)
{
try
{
// GridViewRow gr = ((GridViewRow)((Control)sender).Parent.Parent);
if (e.CommandName == "award")
{
GridViewRow gr = (GridViewRow)(((LinkButton)e.CommandSource).NamingContainer);
int AppliedWorkID = e.CommandArgument.ToInt32(); //gvAppliedWorks.DataKeys[gr.RowIndex].Value.ToInt32();
TextBox txtAwardedBid = gr.FindControl("txtAwardedBid") as TextBox;
TextBox txtRemarks = gr.FindControl("txtRemarks") as TextBox;
Label txtBid = gr.FindControl("txtBidAmount") as Label;
Label lblAboveBelow = gr.FindControl("ddlBidPer") as Label;
string AboveBelow = lblAboveBelow.Text;
Decimal BidAmount = txtBid.Text.ToDecimal();
if (String.IsNullOrEmpty(txtRemarks.Text))
{
Utility.Msg_Error(this.Master, "Remarks Required!!!");
return;
}
Decimal AwardedBid = string.IsNullOrEmpty(txtAwardedBid.Text.Trim()) ? 0 : txtAwardedBid.Text.Trim().ToDecimal();
string Remarks = txtRemarks.Text;
if (AwardedBid != BidAmount)
{
Utility.Msg_Error(this.Master, "Financial Bid must be equal to Awarded Percentage");
return;
}
if (ClsTender.IsReceivedSubMainOffice(AppliedWorkID, LoginUserID, AwardedBid, Remarks, BidAmount, AboveBelow))
{
Utility.Msg_Success(this.Master, "Work Awarded Successfully!!!");
fill_gvAppliedWorks(labNitNo.Text.Replace("NIT No :", "").ToInt32(), labWorkNo.Text.Replace("Work No :", "").ToInt32());
}
}
}
catch (Exception ex)
{
Utility.Msg_Error(Master, ex.Message);
}
}

It sounds like your page is trying to submit what it thinks is potentially dangerous content if setting the ValidateRequest = false solves the issue. Is it possible that one of the controls on your page is sending html or something like that?
If one of your controls needs to send HTML then you can overcome this by adding an attribute to your model.
[AllowHtml]
[Required]
public string article_content { get; set; }
This will allow html to be entered into the control.

Why does the pop up disappear upon check box click event?

I have used panel inside template field and it disappears when I check a checkbox.
I tried fixing it but still disappears. The code works good while debugging but apparently not. Please help if you can. I have spent a lot of time on it already.
<asp:TemplateField HeaderText='Finalized ?'>
<ItemTemplate>
<asp:LinkButton ID="btnFinalizedRecord" OnClick="btnFinalizedRecord_Click" runat="server" Text='<%# Convert.ToBoolean(Eval("IsFinalized")) == true? "Already Finalized": "Finalize" %>'
CssClass="" ToolTip="Finalize" CommandName="Finalize"
CommandArgument='<%#Eval("IsFinalized")%>' Enabled='<%# Convert.ToBoolean(Eval("IsFinalized")) == true? false: true %>'></asp:LinkButton>
<ajax:ConfirmButtonExtender ID="ConfirmButtonExtender1" runat="server" DisplayModalPopupID="mpe2" TargetControlID="btnFinalizedRecord">
</ajax:ConfirmButtonExtender>
<ajax:ModalPopupExtender ID="mpe2" runat="server" PopupControlID="pnlPopup2" TargetControlID="btnFinalizedRecord" OkControlID="btnYes"
CancelControlID="btnNo" BackgroundCssClass="modalBackground">
</ajax:ModalPopupExtender>
<asp:Panel ID="pnlPopup2" runat="server" CssClass="modalPopup" Style="display: none">
<div class="header">
Confirmation
</div>
<div class="body">
Are you sure to <b>Finalize</b>?
<asp:CheckBox ID="chkConfirmFinalize" runat="server" AutoPostBack="true" OnCheckedChanged="chkConfirmFinalize_CheckedChanged" />
<br />
You will not be able to perform an edit after finalizing.
</div>
<div class="Popupfooter" align="right">
<asp:Button ID="btnYes" Enabled="false" CssClass="btn btn-sm btn-danger" runat="server" Text="Yes" />
<asp:Button ID="btnNo" CssClass="btn btn-sm btn-primary" runat="server" Text="No" />
</div>
</asp:Panel>
</ItemTemplate>
</asp:TemplateField>
.cs:
protected void chkConfirmFinalize_CheckedChanged(object sender, EventArgs e)
{
try
{
var chkConfirmFinalize = sender as CheckBox;
GridViewRow gr = (GridViewRow)chkConfirmFinalize.NamingContainer;
Panel pnlPopup2 = gr.FindControl("pnlPopup2") as Panel;
if (chkConfirmFinalize.Checked == true)
{
btnYes.Visible = true;
}
else
{
btnYes.Visible = false;
}
pnlPopup2.Visible = true;
}
catch (Exception ex)
{
Utility.Msg_Error(Master, ex.Message);
}
}

With AutoPostBack you are reloading the page (going to the server and back) when the checkbox, that is why the panel disappear.
You should try to use javascript with the "onclick" event.
<asp:CheckBox ID="chkConfirmFinalize" runat="server" OnClick="somefunction(this)" />
And display the button in jquery:
function somefunction(element) {
if ($element.val() == true) {
$("#btnYes").prop('disabled', false);
} else {
$("#btnYes").prop('disabled', true);
}
}

Get TextBox Text value in a button

I'm trying to get the value of txt_MRP in the codebehind but it keeps giving me
The name "txt_MRP" doesn't exist in this current context
Why is this reference not available? How can I get it?
(The button that I am pressing is btn_add_to_cart_Click)
<div class="row">
<div class="col-lg-2"></div>
<div class="col-lg-4">
<asp:DataList ID="DataList3" runat="server" DataSourceID="SqlDataSource1">
<ItemTemplate>
<ul id="etalage">
<li>
<img id="Img1" class="etalage_thumb_image" runat="server" src='<%# Eval("Fotografia1") %>' />
<img id="Img2" class="etalage_source_image" runat="server" src='<%# Eval("Fotografia2") %>' />
</li>
</ul>
<br />
</ItemTemplate>
</asp:DataList>
</div>
<div class="col-lg-6">
<asp:DataList ID="DataList1" runat="server" DataKeyField="ID" DataSourceID="SqlDataSource1" >
<ItemTemplate>
<div id="product_name_width">
<asp:Label ID="Product_nameLabel" runat="server" CssClass="product_name" Text='<%# Eval("Nombre") %>' />
<br />
</div>
<span id="rs">₡</span><asp:Label ID="MRPLabel" CssClass="price" runat="server" Text='<%# Eval("Precio") %>' />
<br />
<br />
<span id="brand_name">Marca</span>
<asp:Label ID="BrandLabel" runat="server" CssClass="brand" Text='<%# Eval("Marca") %>' />
<br />
</div>
<div class="form-group">
<label> Cantidad </label>
<asp:TextBox CssClass="form-control" ID="txt_MRP" runat="server" ></asp:TextBox>
</div>
<div id="buy_now_css" runat="server">
<ul>
<li>
<asp:Button ID="btn_add_to_cart" CssClass="btn btn-primary" runat="server" Text="Añadir al Carrito" OnClick="btn_add_to_cart_Click" />
</li>
<li>
<asp:Button ID="btn_buy_now" CssClass="btn btn-success" runat="server" Text="Comprar" OnClick="btn_buy_now_Click" />
</li>
</ul>
</div>
</ItemTemplate>
</asp:DataList>
<asp:DataList ID="DataList2" runat="server" DataKeyField="ID" DataSourceID="SqlDataSource1">
<ItemTemplate>
<h2>Descripcion</h2>
<div id="Description_width">
<asp:Label ID="DetailLabel" CssClass="description" runat="server" Text='<%# Eval("Descripcion") %>' />
</div>
</ItemTemplate>
</asp:DataList>
</div>
</div>

txt_MRP does not exist because it is in a DataList Control. It is only available inside the scope of the Control.
If you want to get the value you have to use another method.
Change the button event from Onclick to OnCommand and add a CommandName and set the ItemIndex as CommandArgument.
<asp:Button ID="btn_add_to_cart" CommandName="addToCart" CommandArgument='<%# Container.ItemIndex %>' CssClass="btn btn-primary" runat="server" Text="Añadir al Carrito" OnCommand="btn_add_to_cart_Command" />
And in code behind
protected void btn_add_to_cart_Command(object sender, CommandEventArgs e)
{
//check the correct commandname
if (e.CommandName == "addToCart")
{
//get the row number from the commandargument
int itemIndex = Convert.ToInt32(e.CommandArgument);
//find the texbox in the correct row with findcontrol
TextBox textBox = DataList1.Items[itemIndex].FindControl("txt_MRP") as TextBox;
//do stuff with the value
Label1.Text = textBox.Text;
}
}

You have to assign the delegate or button. For instance:
var button = new Button();
button.Click += new EventHandler("btnAddToCart");
You also may need a CommandArgument, to be able to send a specific value back. But to actually register the click event would be like the above.