I can not edit in the code behind anything that is between the itemtemplate
I need to access in the code behind some labels that are inside an ITEMTEMPLATE, I can not even apply RUNAT = SERVER and put an ID !! in fact, nothing that is inside the ITEMTEMPLATE I can access in the code behind! I need the listview + item template PRA to display some information from my database, but I also need to add and manipulate some labels, how should I do this?
MY CODE :
<div class="row">
<div class="col-lg-12">
<asp:ListView ID="lv_post" runat="server">
<ItemTemplate runat="server">
<div class="row">
<div class="col-lg-12">
<h2 class="titulo"><b><%# Eval("titulo")%></b></h2>
</div>
<div class="col-lg-12">
<div class="data" style="margin-bottom: 1px;"><i class="far fa-calendar-alt"></i><%# Eval("data") %> <i class="fas fa-user"></i><%# Eval("autor") %></div>
</div>
<div class="col-lg-12" style="margin-bottom: 8px;">
<asp:Label ID="lbl_estrela1" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela2" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela3" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela4" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela5" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
</div>
<div class="col-lg-12">
<p class="conteudo">"<%# Eval("conteudo") %>"</p>
</div>
</div>
<%--<%# Eval("id_categoria_fk") %>--%>
<hr />
</ItemTemplate>
</asp:ListView>
</div>
</div>
i can't acess this on code behind:
<div class="col-lg-12" style="margin-bottom: 8px;">
<asp:Label ID="lbl_estrela1" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela2" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela3" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela4" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela5" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
</div>
if I move out of ITEMTEMPLATE I can, but I need this information in the middle of information that only appears in the itemtemplate.
asp.net listview webforms itemtemplate
asked Nov 12 at 4:22
Wellington Capoia
102
add a comment |
I need to access in the code behind some labels that are inside an ITEMTEMPLATE, I can not even apply RUNAT = SERVER and put an ID !! in fact, nothing that is inside the ITEMTEMPLATE I can access in the code behind! I need the listview + item template PRA to display some information from my database, but I also need to add and manipulate some labels, how should I do this?
MY CODE :
<div class="row">
<div class="col-lg-12">
<asp:ListView ID="lv_post" runat="server">
<ItemTemplate runat="server">
<div class="row">
<div class="col-lg-12">
<h2 class="titulo"><b><%# Eval("titulo")%></b></h2>
</div>
<div class="col-lg-12">
<div class="data" style="margin-bottom: 1px;"><i class="far fa-calendar-alt"></i><%# Eval("data") %> <i class="fas fa-user"></i><%# Eval("autor") %></div>
</div>
<div class="col-lg-12" style="margin-bottom: 8px;">
<asp:Label ID="lbl_estrela1" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela2" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela3" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela4" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela5" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
</div>
<div class="col-lg-12">
<p class="conteudo">"<%# Eval("conteudo") %>"</p>
</div>
</div>
<%--<%# Eval("id_categoria_fk") %>--%>
<hr />
</ItemTemplate>
</asp:ListView>
</div>
</div>
i can't acess this on code behind:
<div class="col-lg-12" style="margin-bottom: 8px;">
<asp:Label ID="lbl_estrela1" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela2" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela3" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela4" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela5" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
</div>
if I move out of ITEMTEMPLATE I can, but I need this information in the middle of information that only appears in the itemtemplate.
asp.net listview webforms itemtemplate
asked Nov 12 at 4:22
Wellington Capoia
102
1
You need to access the items by the ItemTemplate Index because there can be more than one control:var lbl = lv_post.FindControl("lbl_estrela1") as Label;
– VDWWD
Nov 12 at 7:33
i can for exemple change the style of a label using this ? how? For what I saw you are getting the value of the label and putting it in the var, but I had to manipulate the attributes of the label!
– Wellington Capoia
Nov 12 at 13:14
You can,lblis typeof Label. so it has all the properties.
– VDWWD
Nov 12 at 13:24
i use var lbl1 = lv_post.FindControl("lbl_estrela1") as Label; so i try lbl1.Attributes.Add("style", "color: #d40000;"); and give me exception System.NullReferenceException: Object reference not set to an instance of an object.'
– Wellington Capoia
Nov 12 at 14:52
add a comment |
I need to access in the code behind some labels that are inside an ITEMTEMPLATE, I can not even apply RUNAT = SERVER and put an ID !! in fact, nothing that is inside the ITEMTEMPLATE I can access in the code behind! I need the listview + item template PRA to display some information from my database, but I also need to add and manipulate some labels, how should I do this?
MY CODE :
<div class="row">
<div class="col-lg-12">
<asp:ListView ID="lv_post" runat="server">
<ItemTemplate runat="server">
<div class="row">
<div class="col-lg-12">
<h2 class="titulo"><b><%# Eval("titulo")%></b></h2>
</div>
<div class="col-lg-12">
<div class="data" style="margin-bottom: 1px;"><i class="far fa-calendar-alt"></i><%# Eval("data") %> <i class="fas fa-user"></i><%# Eval("autor") %></div>
</div>
<div class="col-lg-12" style="margin-bottom: 8px;">
<asp:Label ID="lbl_estrela1" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela2" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela3" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela4" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela5" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
</div>
<div class="col-lg-12">
<p class="conteudo">"<%# Eval("conteudo") %>"</p>
</div>
</div>
<%--<%# Eval("id_categoria_fk") %>--%>
<hr />
</ItemTemplate>
</asp:ListView>
</div>
</div>
i can't acess this on code behind:
<div class="col-lg-12" style="margin-bottom: 8px;">
<asp:Label ID="lbl_estrela1" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela2" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela3" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela4" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela5" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
</div>
if I move out of ITEMTEMPLATE I can, but I need this information in the middle of information that only appears in the itemtemplate.
asp.net listview webforms itemtemplate
asked Nov 12 at 4:22
Wellington Capoia
102
I need to access in the code behind some labels that are inside an ITEMTEMPLATE, I can not even apply RUNAT = SERVER and put an ID !! in fact, nothing that is inside the ITEMTEMPLATE I can access in the code behind! I need the listview + item template PRA to display some information from my database, but I also need to add and manipulate some labels, how should I do this?
MY CODE :
<div class="row">
<div class="col-lg-12">
<asp:ListView ID="lv_post" runat="server">
<ItemTemplate runat="server">
<div class="row">
<div class="col-lg-12">
<h2 class="titulo"><b><%# Eval("titulo")%></b></h2>
</div>
<div class="col-lg-12">
<div class="data" style="margin-bottom: 1px;"><i class="far fa-calendar-alt"></i><%# Eval("data") %> <i class="fas fa-user"></i><%# Eval("autor") %></div>
</div>
<div class="col-lg-12" style="margin-bottom: 8px;">
<asp:Label ID="lbl_estrela1" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela2" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela3" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela4" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela5" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
</div>
<div class="col-lg-12">
<p class="conteudo">"<%# Eval("conteudo") %>"</p>
</div>
</div>
<%--<%# Eval("id_categoria_fk") %>--%>
<hr />
</ItemTemplate>
</asp:ListView>
</div>
</div>
i can't acess this on code behind:
<div class="col-lg-12" style="margin-bottom: 8px;">
<asp:Label ID="lbl_estrela1" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela2" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela3" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela4" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
<asp:Label ID="lbl_estrela5" CssClass="fa fa-star" runat="server" Text=""></asp:Label>
</div>
if I move out of ITEMTEMPLATE I can, but I need this information in the middle of information that only appears in the itemtemplate.
asp.net listview webforms itemtemplate
asp.net listview webforms itemtemplate
asked Nov 12 at 4:22
Wellington Capoia
102
asked Nov 12 at 4:22
Wellington Capoia
102
asked Nov 12 at 4:22
Wellington Capoia
102
asked Nov 12 at 4:22
Wellington Capoia
102
asked Nov 12 at 4:22
Wellington Capoia
102
102
1
You need to access the items by the ItemTemplate Index because there can be more than one control:var lbl = lv_post.FindControl("lbl_estrela1") as Label;
– VDWWD
Nov 12 at 7:33
i can for exemple change the style of a label using this ? how? For what I saw you are getting the value of the label and putting it in the var, but I had to manipulate the attributes of the label!
– Wellington Capoia
Nov 12 at 13:14
You can,lblis typeof Label. so it has all the properties.
– VDWWD
Nov 12 at 13:24
i use var lbl1 = lv_post.FindControl("lbl_estrela1") as Label; so i try lbl1.Attributes.Add("style", "color: #d40000;"); and give me exception System.NullReferenceException: Object reference not set to an instance of an object.'
– Wellington Capoia
Nov 12 at 14:52
add a comment |
1
You need to access the items by the ItemTemplate Index because there can be more than one control:var lbl = lv_post.FindControl("lbl_estrela1") as Label;
– VDWWD
Nov 12 at 7:33
i can for exemple change the style of a label using this ? how? For what I saw you are getting the value of the label and putting it in the var, but I had to manipulate the attributes of the label!
– Wellington Capoia
Nov 12 at 13:14
You can,lblis typeof Label. so it has all the properties.
– VDWWD
Nov 12 at 13:24
i use var lbl1 = lv_post.FindControl("lbl_estrela1") as Label; so i try lbl1.Attributes.Add("style", "color: #d40000;"); and give me exception System.NullReferenceException: Object reference not set to an instance of an object.'
– Wellington Capoia
Nov 12 at 14:52
1
1
You need to access the items by the ItemTemplate Index because there can be more than one control:
var lbl = lv_post.FindControl("lbl_estrela1") as Label;– VDWWD
Nov 12 at 7:33
You need to access the items by the ItemTemplate Index because there can be more than one control:
var lbl = lv_post.FindControl("lbl_estrela1") as Label;– VDWWD
Nov 12 at 7:33
i can for exemple change the style of a label using this ? how? For what I saw you are getting the value of the label and putting it in the var, but I had to manipulate the attributes of the label!
– Wellington Capoia
Nov 12 at 13:14
i can for exemple change the style of a label using this ? how? For what I saw you are getting the value of the label and putting it in the var, but I had to manipulate the attributes of the label!
– Wellington Capoia
Nov 12 at 13:14
You can,
lbl is typeof Label. so it has all the properties.– VDWWD
Nov 12 at 13:24
You can,
lbl is typeof Label. so it has all the properties.– VDWWD
Nov 12 at 13:24
i use var lbl1 = lv_post.FindControl("lbl_estrela1") as Label; so i try lbl1.Attributes.Add("style", "color: #d40000;"); and give me exception System.NullReferenceException: Object reference not set to an instance of an object.'
– Wellington Capoia
Nov 12 at 14:52
i use var lbl1 = lv_post.FindControl("lbl_estrela1") as Label; so i try lbl1.Attributes.Add("style", "color: #d40000;"); and give me exception System.NullReferenceException: Object reference not set to an instance of an object.'
– Wellington Capoia
Nov 12 at 14:52
add a comment |
1 Answer
1
active
oldest
votes
ListView contains a list of items. The ItemTemplate describes the layout of each one of these items. So, the Label controls inside the template exist for every item of the list.
Here is a working example:
ASPX Page
<head runat="server">
<title></title>
<style>
.color2
color: #d40000;
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ListView ID="lv_post" runat="server" ItemType="String">
<ItemTemplate>
<asp:Label ID="lbl_estrela" runat="server" Text="<%# Item %>"></asp:Label>
<br />
</ItemTemplate>
</asp:ListView>
</div>
</form>
</body>
Code Behind
public string data = "Data 1", "Data 2", "Data 3", "Data 4" ;
protected void Page_Load(object sender, EventArgs e)
if (!IsPostBack)
lv_post.DataSource = data;
lv_post.DataBind();
var lbl_estrela1 = lv_post.Items[1].FindControl("lbl_estrela") as Label;
lbl_estrela1.CssClass = "color2";
var lbl_estrela3 = lv_post.Items[3].FindControl("lbl_estrela") as Label;
lbl_estrela3.CssClass = "color2";
In the above example, the css style of the second and the fourth label is set to color2. Note, the use of the Items collection.
Optional
To better understand, take a look at the page source generated when the page is loaded.
<div>
<span id="lv_post_lbl_estrela_0">Data 1</span>
<br />
<span id="lv_post_lbl_estrela_1" class="color2">Data 2</span>
<br />
<span id="lv_post_lbl_estrela_2">Data 3</span>
<br />
<span id="lv_post_lbl_estrela_3" class="color2">Data 4</span>
<br />
</div>
answered Nov 15 at 15:31
dpant
516516
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
ListView contains a list of items. The ItemTemplate describes the layout of each one of these items. So, the Label controls inside the template exist for every item of the list.
Here is a working example:
ASPX Page
<head runat="server">
<title></title>
<style>
.color2
color: #d40000;
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ListView ID="lv_post" runat="server" ItemType="String">
<ItemTemplate>
<asp:Label ID="lbl_estrela" runat="server" Text="<%# Item %>"></asp:Label>
<br />
</ItemTemplate>
</asp:ListView>
</div>
</form>
</body>
Code Behind
public string data = "Data 1", "Data 2", "Data 3", "Data 4" ;
protected void Page_Load(object sender, EventArgs e)
if (!IsPostBack)
lv_post.DataSource = data;
lv_post.DataBind();
var lbl_estrela1 = lv_post.Items[1].FindControl("lbl_estrela") as Label;
lbl_estrela1.CssClass = "color2";
var lbl_estrela3 = lv_post.Items[3].FindControl("lbl_estrela") as Label;
lbl_estrela3.CssClass = "color2";
In the above example, the css style of the second and the fourth label is set to color2. Note, the use of the Items collection.
Optional
To better understand, take a look at the page source generated when the page is loaded.
<div>
<span id="lv_post_lbl_estrela_0">Data 1</span>
<br />
<span id="lv_post_lbl_estrela_1" class="color2">Data 2</span>
<br />
<span id="lv_post_lbl_estrela_2">Data 3</span>
<br />
<span id="lv_post_lbl_estrela_3" class="color2">Data 4</span>
<br />
</div>
answered Nov 15 at 15:31
dpant
516516
add a comment |
ListView contains a list of items. The ItemTemplate describes the layout of each one of these items. So, the Label controls inside the template exist for every item of the list.
Here is a working example:
ASPX Page
<head runat="server">
<title></title>
<style>
.color2
color: #d40000;
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ListView ID="lv_post" runat="server" ItemType="String">
<ItemTemplate>
<asp:Label ID="lbl_estrela" runat="server" Text="<%# Item %>"></asp:Label>
<br />
</ItemTemplate>
</asp:ListView>
</div>
</form>
</body>
Code Behind
public string data = "Data 1", "Data 2", "Data 3", "Data 4" ;
protected void Page_Load(object sender, EventArgs e)
if (!IsPostBack)
lv_post.DataSource = data;
lv_post.DataBind();
var lbl_estrela1 = lv_post.Items[1].FindControl("lbl_estrela") as Label;
lbl_estrela1.CssClass = "color2";
var lbl_estrela3 = lv_post.Items[3].FindControl("lbl_estrela") as Label;
lbl_estrela3.CssClass = "color2";
In the above example, the css style of the second and the fourth label is set to color2. Note, the use of the Items collection.
Optional
To better understand, take a look at the page source generated when the page is loaded.
<div>
<span id="lv_post_lbl_estrela_0">Data 1</span>
<br />
<span id="lv_post_lbl_estrela_1" class="color2">Data 2</span>
<br />
<span id="lv_post_lbl_estrela_2">Data 3</span>
<br />
<span id="lv_post_lbl_estrela_3" class="color2">Data 4</span>
<br />
</div>
answered Nov 15 at 15:31
dpant
516516
add a comment |
ListView contains a list of items. The ItemTemplate describes the layout of each one of these items. So, the Label controls inside the template exist for every item of the list.
Here is a working example:
ASPX Page
<head runat="server">
<title></title>
<style>
.color2
color: #d40000;
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ListView ID="lv_post" runat="server" ItemType="String">
<ItemTemplate>
<asp:Label ID="lbl_estrela" runat="server" Text="<%# Item %>"></asp:Label>
<br />
</ItemTemplate>
</asp:ListView>
</div>
</form>
</body>
Code Behind
public string data = "Data 1", "Data 2", "Data 3", "Data 4" ;
protected void Page_Load(object sender, EventArgs e)
if (!IsPostBack)
lv_post.DataSource = data;
lv_post.DataBind();
var lbl_estrela1 = lv_post.Items[1].FindControl("lbl_estrela") as Label;
lbl_estrela1.CssClass = "color2";
var lbl_estrela3 = lv_post.Items[3].FindControl("lbl_estrela") as Label;
lbl_estrela3.CssClass = "color2";
In the above example, the css style of the second and the fourth label is set to color2. Note, the use of the Items collection.
Optional
To better understand, take a look at the page source generated when the page is loaded.
<div>
<span id="lv_post_lbl_estrela_0">Data 1</span>
<br />
<span id="lv_post_lbl_estrela_1" class="color2">Data 2</span>
<br />
<span id="lv_post_lbl_estrela_2">Data 3</span>
<br />
<span id="lv_post_lbl_estrela_3" class="color2">Data 4</span>
<br />
</div>
answered Nov 15 at 15:31
dpant
516516
ListView contains a list of items. The ItemTemplate describes the layout of each one of these items. So, the Label controls inside the template exist for every item of the list.
Here is a working example:
ASPX Page
<head runat="server">
<title></title>
<style>
.color2
color: #d40000;
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ListView ID="lv_post" runat="server" ItemType="String">
<ItemTemplate>
<asp:Label ID="lbl_estrela" runat="server" Text="<%# Item %>"></asp:Label>
<br />
</ItemTemplate>
</asp:ListView>
</div>
</form>
</body>
Code Behind
public string data = "Data 1", "Data 2", "Data 3", "Data 4" ;
protected void Page_Load(object sender, EventArgs e)
if (!IsPostBack)
lv_post.DataSource = data;
lv_post.DataBind();
var lbl_estrela1 = lv_post.Items[1].FindControl("lbl_estrela") as Label;
lbl_estrela1.CssClass = "color2";
var lbl_estrela3 = lv_post.Items[3].FindControl("lbl_estrela") as Label;
lbl_estrela3.CssClass = "color2";
In the above example, the css style of the second and the fourth label is set to color2. Note, the use of the Items collection.
Optional
To better understand, take a look at the page source generated when the page is loaded.
<div>
<span id="lv_post_lbl_estrela_0">Data 1</span>
<br />
<span id="lv_post_lbl_estrela_1" class="color2">Data 2</span>
<br />
<span id="lv_post_lbl_estrela_2">Data 3</span>
<br />
<span id="lv_post_lbl_estrela_3" class="color2">Data 4</span>
<br />
</div>
answered Nov 15 at 15:31
dpant
516516
answered Nov 15 at 15:31
dpant
516516
answered Nov 15 at 15:31
dpant
516516
answered Nov 15 at 15:31
dpant
516516
516516
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1
You need to access the items by the ItemTemplate Index because there can be more than one control:
var lbl = lv_post.FindControl("lbl_estrela1") as Label;– VDWWD
Nov 12 at 7:33
i can for exemple change the style of a label using this ? how? For what I saw you are getting the value of the label and putting it in the var, but I had to manipulate the attributes of the label!
– Wellington Capoia
Nov 12 at 13:14
You can,
lblis typeof Label. so it has all the properties.– VDWWD
Nov 12 at 13:24
i use var lbl1 = lv_post.FindControl("lbl_estrela1") as Label; so i try lbl1.Attributes.Add("style", "color: #d40000;"); and give me exception System.NullReferenceException: Object reference not set to an instance of an object.'
– Wellington Capoia
Nov 12 at 14:52