as you can see in my code... i have a label inside ItemTemplate and what i want is when i click on that particular control i would like to access to the label so that i can update the status...
<asp:Repeater ID="Repeater1" runat="server" DataSourceID="ObjectDataSource1" OnItemCreated="Repeater1_ItemCreated" OnItemDataBound="Repeater1_ItemDataBound">
<ItemTemplate>
Book:
<asp:Label ID="lblStatus" runat="server"></asp:Label>
<Mycontrol:Content1 ID="EmpControl" runat="server" OnMyControlClick="EmpControl_clicking" />
<br />
</ItemTemplate>
</asp:Repeater>
protected void EmpControl_clicking(object sender, EmployeeEventArgs e)
{
// how do i get access to the lblStatus???
}
You will need to use the FindControl method to access controls within templates:
protected void EmpControl_clicking(object sender, EmployeeEventArgs e)
{
MyControl myControl = (MyControl)sender;
Label c = (Label)myControl.Parent.FindControl("lblStatus");
}
Related
I have below link button and I need to show it only if grid has records.
<asp:LinkButton ID="linkButton1" runat="server" ToolTip="Delete file" Visible='<%# (Convert.ToInt32(Eval("gridViewFileInformation.Rows.Count"))>0) %>' >Delete</asp:LinkButton>
But it shows always.
In your code behind file after databind of "gridViewFileInformation" you can set the Visible property of linkButton1. Similar question
Something like:
ASPX File:
<asp:GridView
runat="server"
ID="gridViewFileInformation"
OnDataBound="gridViewFileInformation_DataBound">
</asp:GridView>
CS File:
protected void gridViewFileInformation_DataBound(object sender, EventArgs e)
{
linkButton1.Visible = (gridViewFileInformation.Rows.Count > 0);
}
<asp:repeater id="rpt" run="server">
<ItemTemplate>
<asp:LinkButton id="Delete" runat="server" OnCommand="Delete_Command"></asp:linkButton>
<asp:label id="lblMessage" run="server">
</ItemTemplate>
</asp:repeater>
Code Behind:
protected void Delete_Command(object sender, CommandEventArgument e)
{
}
how i get the reference to the "lblMessage" in Delete_Command.
Try this:
protected void Delete_Command(object sender, CommandEventArgs e)
{
LinkButton button = (LinkButton)sender;
Label label = (Label)button.NamingContainer.FindControl("lblMessage");
// do something with the label
}
If you:
Have bound the repeater
Have ViewState enabled
Do not re-bind the repeater earlier in the post back
this should work. If not, please verify that the id of the label is indeed exactly the same as in the ...FindControl("lblMessage");. Also make sure that runat="server" is set on all the controls involved.
Edit: One more thing to check: Search the markup file (the .aspx file) and check if there are any other controls that also use the same event in the code behind. If another control is using the same event handler and that control is not in the repeater, the label will not be found.
means are you want find a lable in Delete_Command event?
in aspx
<asp:Repeater ID="rpt" runat="server">
<ItemTemplate>
<asp:LinkButton ID="Delete" runat="server" OnCommand="Delete_Command"></asp:LinkButton>
<asp:Label ID="lblMessage" run="server">
</ItemTemplate>
</asp:Repeater>
in aspx.cs
protected void Delete_Command(object sender, CommandEventArgs e)
{
foreach (RepeaterItem item in rpt.Items)
{
Label lblMessage = item.FindControl("lblMessage") as Label;
if (lblMessage != null)
{
lblMessage.Text = "";
}
}
}
If You want to make it in your way use following code in
protected void Repeater1_ItemCommand(object source, CommandEventArgs e)
{
(((LinkButton)source).NamingContainer).FindControl("lblName")
}
Another approach.. But something that you can buy
aspx
<asp:Repeater ID="Repeater1" runat="server"
onitemcommand="Repeater1_ItemCommand">
<ItemTemplate>
<asp:Label ID="lblName" runat="server" Text='<%=Eval("Name") %>' ></asp:Label>
<asp:LinkButton runat="server" CommandName="Delete_Command" Text="sd"></asp:LinkButton>
</ItemTemplate>
</asp:Repeater>
.cs
protected void Delete_Command(object sender, CommandEventArgument e)
{
if(e.CommandName != null)// Conditional Check
{
Label label = e.Item.FindControl("lblMessage");
// do something with the label
}
}
I have a user control that contains a radio list that on SelectIndexChanged it updates a drop down.
I put together a basic page and add the user control to the page it works fine but when I move the control to inside a radgrid it doesn't work, it will post back but never call the SelectIndexChanged event.
I've pulled up 2 previous questions on this Q. 1 and Q. 2 which say that OnSelectedIndexChanged needed to be set in the aspx page. My issue is that the control doesn't exist in the aspx page and is created later so that solution does not work for me.
Working code
working.aspx
<TT:ToolTipControl ID="ToolTipEdit" runat="server" />
working.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
ToolTipEdit.getEditToolTip("POL_TERM_CD", "DataPolTermDropDownlistEdit");
}
User Control
userControl.ascx.cs
public void getEditToolTip(string fieldName, string ddlName)
{
DataPolTermRadioListBox ccPolTermRadioListBox = new DataPolTermRadioListBox(); //custom radio list
ccPolTermRadioListBox.ID = "PolTermRadioListBox";
ccPolTermRadioListBox.AutoPostBack = true;
ccPolTermRadioListBox.SelectedIndexChanged += new System.EventHandler(updateParent);
ToolTip.Controls.Add(ccPolTermRadioListBox);
}
Broken Code
brokenPage.aspx
<telerik:RadGrid ID="rgState" Skin="WebBlue" runat="server" OnNeedDataSource="rgState_NeedDataSource"
AutoGenerateColumns="False" OnPreRender="rgState_PreRender">
<MasterTableView DataKeyNames="wrtnStPolId" AllowAutomaticUpdates="false" AllowAutomaticDeletes="true"
AllowAutomaticInserts="false" CommandItemDisplay="Top" AllowMultiColumnSorting="True"
EditMode="InPlace" GroupLoadMode="Server" Caption="State(s) and Exposure(s)">
<Columns>
<telerik:GridTemplateColumn AllowFiltering="false" HeaderText="Pol Type Nstd" SortExpression="nonStdPolTypeCd"
UniqueName="nonStdPolTypeCd">
<ItemTemplate>
<asp:Label ID="lblNonStdPolTypeCd" runat="server" align="center" Text='<%#DataBinder.Eval(Container.DataItem, "nonStdPolTypeCd")%>' />
</ItemTemplate>
<EditItemTemplate>
<cc1:DataNonStdTypeCdDropDownList ID="ddlNonStdTypeCd" runat="server" ClientIDMode="Predictable">
</cc1:DataNonStdTypeCdDropDownList>
<TT:ToolTipControl ID="ttcNonStdPolTypeCdEdit" runat="server" />
</EditItemTemplate>
</telerik:GridTemplateColumn>
</Columns>
</MasterTableView>
</telerik:RadGrid>
brokenPage.aspx.cs
protected void rgState_PreRender(object sender, EventArgs e)
{
RadGrid rgExpMod = (RadGrid)sender;
foreach (GridDataItem row in rgExpMod.Items)
{
GridDataItem gdiItem = (GridDataItem)row;
if (row.FindControl("ttcNonStdPolTypeCdEdit") != null)
{
DropDownList ddl = (DropDownList)row.FindControl("ddlNonStdTypeCd");
ddl.ID += row.RowIndex;
ddl.SelectedIndex = 2;
NCCI.PDC.Web.Controls.ucToolTip ttcNonStdPolTypeCdEdit = (NCCI.PDC.Web.Controls.ucToolTip)row.FindControl("ttcNonStdPolTypeCdEdit");
ttcNonStdPolTypeCdEdit.getEditToolTip("non_std_pol_type_cd", ddl.ID);
}
}
}
I have a repeater control and textbox in that repeater. I want a required field validator in the textbox ho can i do this
<asp:Repeater id="myRep" OnItemDataBound="rep_ItemDataBound" runat="server">
<ItemTemplate>
<asp:TextBox id="tx" runat="server" />
<asp:RequiredFieldValidator id="myVal" ControlToValidate="tx" ErrorMessage="Required" runat="server" />
</ItemTemplate>
</asp:Repeater>
UPDATE
Add this to code-behind (also modify the markup a bit to subscribe to an event, see above):
protected void rep_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
RequiredFieldValidator val = (RequiredFieldValidator)e.Item.FindControl("myVal");
TextBox tb = (TextBox)e.Item.FindControl("tx");
val.ControlToValidate = tb.ID;
}
If you want all textboxes in a repeater to be validated by a single button click then thats simple like this
<asp:Repeater ID="rpt" runat="server">
<ItemTemplate>
<asp:TextBox ID="txt" runat="server">
</asp:TextBox>
<asp:RequiredFieldValidator ID="rqf" ControlToValidate="txt"
ErrorMessage="*" ValidationGroup = "TestValidationGroup" runat = "server">
</asp:RequiredFieldValidator>
</ItemTemplate>
</asp:Repeater>
<asp:Button ID = "btnSubmit" runat = "server" ValidationGroup = "TestValidationGroup" />
No need to check for any event for databound or anything.
You can set ControlToValidate value on repeater itemdatabound.
Try this one
<asp:Repeater ID="rptSample" runat="server">
<ItemTemplate>
Name:<br />
<asp:TextBox ID="txtName" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvName" ControlToValidate="txtName" runat="server" Display="Static" ErrorMessage="Name field cannot be left blank"></asp:RequiredFieldValidator>
</ItemTemplate>
</asp:Repeater>
<br />
<asp:Button ID="btnSubmit" Text="Submit" runat="server" />
protected void myRep_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
((RequiredFieldValidator)e.Item.FindControl("myVal")).ValidationGroup = ((TextBox)e.Item.FindControl("tx")).UniqueID;
}
}
protected void Repeater_OnItemDataBound(object sender, RepeaterItemEventArgs e) {
tblData tbldata = e.Item.DataItem as tblData;
RequiredFieldValidator val = (RequiredFieldValidator)e.Item.FindControl("rfv");
if (tbldata.FieldName.ToUpper().Contains("NOT NULL")) {
TextBox tb = (TextBox)e.Item.FindControl("txtDATFieldName");
val.ControlToValidate = tb.ID;
}
else {
val.Enabled = false; // disable when you dont need a validator
}
}
Maybe you want have a validation per row... Set the validation group to a group per row like this
ValidationGroup='<%# "gropname" + Eval("Id") %>'
do this in the validator, textbox and the button
HTH
G.
I kept getting a duplicate key exception in RegisterExpandoAttribute trying to do this.
I was using a UserControl inside a repeater, when "OnDataBinding" instead of "ItemDataBinding"
This worked for me:
/// <summary>
/// Raises the <see cref="E:System.Web.UI.Control.DataBinding" /> event.
/// </summary>
/// <param name="e">An <see cref="T:System.EventArgs" /> object that contains the event data.</param>
protected override void OnDataBinding(EventArgs e)
{
base.OnDataBinding(e);
foreach (Control ct in this.Controls)
{
BaseValidator bv = ct as BaseValidator;
if (null == bv)
{
continue;
}
bv.ControlToValidate = this.FindControl(bv.ControlToValidate).ID;
bv.ValidationGroup = this.ValidationGroup;
}
}
And yes, I don't think it makes any sense either
I have a rather annoying issue here
I can't get my CheckBox CheckedChange event to fire, or catch or whatever it is that fails:
ASPX Code
<asp:UpdatePanel runat="server" ID="udp_Lists" UpdateMode="Always">
<ContentTemplate>
<asp:Repeater ID="rep_showings" runat="server">
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<div class="div_assignment">
<div class="div_assignment_text">
<asp:LinkButton runat="server" ID="lnk_show_task" OnClick="lnk_show_task_Click" CommandArgument='<%# Eval("Id") %>' Text='<%# Eval("TaskTitle") %>'></asp:LinkButton>
</div>
<div class="div_assignment_checkbox">
<asp:CheckBox runat="server" ID="chk_handle" AutoPostBack="true" OnCheckedChanged="chk_handle_Changed" ToolTip='<%# Eval("Id") %>' />
</div>
</div>
</ItemTemplate>
<FooterTemplate>
</FooterTemplate>
</asp:Repeater>
</ContentTemplate>
<Triggers>
</Triggers>
The Code behind function "chk_handle_Changed" is never reached.
The Linkbutten works perfectly.
I took a look at your problem. I used the following code:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
this.rep_showings.DataSource = new object[] { new { Title = "title", ID = "id" } };
this.rep_showings.DataBind();
}
}
protected void chk_handle_Changed(object source, EventArgs e)
{
Trace.Write("here");
}
protected void lnk_show_task_Click(object source, EventArgs e)
{
Trace.Write("here 2");
}
protected void rep_showings_ItemCommand(object source, RepeaterCommandEventArgs e)
{ }
The above code works. I think you are probably re-binding your repeater on every postback - I tested this by removing the "if (!IsPostBack)" statement in Page_Load(), and I was able to reproduce the problematic behaviour you describe.
Rebinding a control on every postback should be avoided if possible. Once a control is populated, it's data is taken care of by ViewState, so unless the data is changing, you should probably not be rebinding it all the time.