Access Child Control Within Page Control?
Feb 23, 2010asp.net page is also a control.
how can I access child control within page control?
asp.net page is also a control.
how can I access child control within page control?
I need to make set values to controls in a master page from the child page. Simple LinkButton - nothing special.
View 6 RepliesI have a parent control and a child control. On parent control load I am setting a cookie value. On child control I am checking if this cookie is not null then call parent control's CalculateDeliveryAndTax() method. How should I go about accessing from child control, parent control's CalculateDeliveryAndTax() method.
View 2 RepliesHow can one access public property of User Control In Master Page on child Pages.
View 1 RepliesI have a Web Site project, and within it I have a user Web Control defined in an ascx file.The control is added to the Site.Master, and it shows up correctly on the page and everything is fine.I need to override some of the control's fields on one of the pages that derive from Site.Master.
// In OnLoad:
MyControlName control = (MyControlName) Page.Master.GetBaseMasterPage().FindControl("controlID"));
The issue is that MyControlName doesn't register as a valid Type on the child page. If I add a second instance of the control to the child page directly, the above works as needed, but if the control isn't placed directly on the page, and instead is only defined in the master page, the type is undefined. The control is not in a namespace, and is defined within the project, so I don't know why it is having such an issue location the appropriate type.If I put a breakpoint in the OnLoad, the type listed for the control is ASP.my_control_name_ascx, but using that does not work either. Why can't the child class reference the correct type? Can I fix this?
I have one dropdown in .aspx page and one button.When user click a button i have to show a pop-up window.In this pop-up i have to show data based upon value selected in dropdown.so how to access a dropdown. Its a server control dropdown.
View 3 RepliesI have one Login control converted into template to customize it. besides two default input text boxes(username, and password), I have added one more as per my need.
the two default controls are easily accessible from underlying code file but I cant take a reference to the control I have added inside Login control. this control is not available in this scope neither directly nor as child control.
I simply want to take reference to this child control.
I want to share a common page load and page init events sequence between Master page and child page and User Control as described below:
Let us have the following components:-
1. TestMaster.master -> It is the master page
2. TestChild.aspx -> It is the Child page
3. TestUserContrl.ascx -> It is the UserControl present within the TestMaster.master page.
[code]...
I have user control that is part of a panel that located in my master page in every page i need different setting for that user control.
for example in page 1 i need to set the AutoPostBack property to true but in page 2 i need it to be false.
so my question is how can i user control properties that located in master page from a child page?
If for example my userControl has a CheckBox called IsGreatCoder and the userControl is embedded in a main page (parent page).
I normally have gained access to the IsGreatCoder.Checked value in the main-page by exposing it through a public property that I have to manually write (say "IsAGreatCoder").
If UserControl is included in the main page as "userControl1", then I would access it as "userControl1.IsAGreatCoder".
But, I was wondering if there was anyway to declare the UserControl such that all the UI controls added to it were declared as being public, that way allowing me to gain access to the actual controls in the main page (the parent).
Essentially I would like to be able do something like userControl1.IsGreatCoder.Checked instead of having to implement a property.
The reason I want to do this is that I want to have access to many more of the check-box's properties and it would be a pain to implement each one as a public property.
I've got a composite control (class) that exposes an asp:Label through a get-property. Is is possible to set the Text property of the Label through aspx-code?
I'd like to do something like this:
<cfw:MyCompositeControl runat="server" Label.Text="Test" />
One solution is adding each property to the composite class (like a public LabelText), but I'd like to set any property of any child control. So as new features of child controls become available, I'd like to be able to use them on my composite control. So basically I would like to set any property of the exposed child control.
I am using a form view control which has two binded textbox. Now at this level it works fine and the textboxes show the values from database. But when i insert a panel inside the form view and move these two textboxes inside the panel, they dont show any values. What could be the reason for this?
View 2 RepliesI would like to know how to add some additional child nodes to a custom user control class derived from System.Web.UI.Control. For example currently I have a control that contains no child nodes and on the design surface looks like the following.
<cust:MyCustomControl id="ctlMyCustomControl" runat="server" attribute1="somevalue" attribute2="somevalue" ></MyCustomControl>
What I am looking for is to have the ability to add n number of child nodes to this control from the design surface and then access their values from the code. So adding to the control stated above.
<cust:MyCustomControl id="ctlMyCustomControl" runat="server" attribute1="somevalue" attribute2="somevalue" >
<childnode1>value1</childnode1>
<childnode2>value2</childnode2>
</MyCustomControl>
It is not clear to me how to access the child nodes.
I had a little project is create dynamic control. My project had get detail of content and replace in sign string, Add control in sign. After click button I will find in control, I had added on page load in panel. I can't get value in child control panel, Don't have control in panel. My source is
protected void Page_Load(object sender, EventArgs e)
{
string config_design = GetConfigueKey(configDesign);
Genform(config_design, GetContent(config_design));
if (IsPostBack)
{
btn_submit_click(sender, e);
}
else
{
string config_design = GetConfigueKey(configDesign);
Genform(config_design, GetContent(config_design));
}
}
protected String GetContent(string designname)
{
string rev = "";
mClsDB = new clsConn();
strSql = "SELECT STR_DESIGN_CONTENT,STR_DESIGN_NAME,INT_FORM_ID FROM TBL_DESIGN WHERE INT_DESIGN_ID = " + designname + " ";
DataTable dt = mClsDB.GetDataTable(strSql);
if (dt != null)
{
if (dt.Rows.Count > 0)
{
rev = dt.Rows[0]["STR_DESIGN_CONTENT"].ToString();
}
}
return rev;
}
protected void Genform(string designname, string content)
{
string rev = content;
mClsDB = new clsConn();
//strSQL = " SELECT INT_FIELD_ID,STR_FIELD_NAME,STR_FIELD_SIZE,STR_FIELD_CSS,STR_FIELD_DEFAULTVALUE,BIT_FIELD_VISIBLE,INT_FIELD_VALIDATE_TYPE,STR_FIELD_MINMAX,STR_FIELD_TYPE_NAME ";..................
I have a label control. I added table dynamically into the label. and dynamically buttons into table cells. On button click of each cell raises a popup where I can add a item. Now I have a problem, My table is not refreshing when I added the items and closed the popup. But they are adding on the next event raise.
View 5 RepliesAdding an ImageButton to the ImageMap control as a child control. I am developing a map that will be contained some user-defined nodes. The user can click anywhere of the map to add the node to that location. X locations and Y Locations are stored in the database. Initializing the page all stored nodes will be created programmatically. My problem is that the created nodes are invisible. If I replace the ImageMap with a panel control then all dynamically created nodes will be visible but in this situation I cannot capture the X and Y locations.
protected System.Web.UI.WebControls.ImageButton
btn;
protected void Page_Load(object sender,
EventArgs e)
{
btn.ImageUrl = "Images/..."
}
override protected
void OnInit(EventArgs e)
{
btn = new ImageButton();
btn.ID = "btn1";
btn.Style["Position"] =
"Absolute";
btn.Style["Top"] =
"100px";
btn.Style["Left"] =
"100px";
ImageMap1.Controls.Add(btn);//... invisible nodes
// Panel1.Controls.Add(btn);//... visible nodes
base.OnInit(e);
}
So I have one of the following problems:
1. Adding child to the ImageMap Control OR
2. Capturing the mouse X and Y Locations in the panel
I Have a webpage suppose ParentPage.aspx which contains a iframe. Under iframe i am calling another webpage Childpage.aspx . Now i want to access ParentPage controls from ChildPage and change the property of that control.
how it is possible ?
Below i am writing a code which i am trying. In this code Page.PreviousPage is always null .
[code]....
I have a custom control that is based off the gridview control located at: here The control is basically a gridview that automatically creates a column of checkboxes that can be used to "check" individual rows in the gridview. During the gridview's "CreateColumns" event, the "checkboxcolumn" is created dynamically. The checkboxcolumn also contains another checkbox in the header that is used to "select/deselect all" checkboxes in the column. Since the gridview does not automatically remember the state of the checkboxes in the checkboxcolumn on postback, I added a method to the control called "SaveCheckBoxState" which stores the indexes of the checked rows in Viewstate, and then I modified the "OnRowDataBound" event to check the Viewstate and reset the checkboxes based on the Viewstate.
I then added a call to "SaveCheckBoxState" in the gridview's OnSorting and OnPageIndexChanging events. This works great so long as I'm sorting or changing pages. However, I need it to update the viewstate everytime someone clicks or unclicks one of the checkboxes. At this time, the checkboxes are rendered with an onclick event that calls some javascript to highlight the row, or in the case of the checkbox in the header, to select/deselect all checkboxes. I need to call the "SaveCheckBoxState" method from the javascript used by the customcontrol, or I need to find a way to modify viewstate from javascript and perform the same action as "SaveCheckBoxState".
I've tried adding the "SaveCheckBoxState" to the onclick event declaration in the checkboxes, but when run, it simply tells me that the method is undefined. It doesn't exist in the parent page, and I don't think I should have to make an event for the parent page to pass the click to. It seems to me this should be all self contained within the custom control. Does anyone know how I can acheive this? Here is the code for the gridview OnPreRender event where the onclick event of the checkbox is set:
protected override void OnPreRender(EventArgs e)
{
// Do as usual
base.OnPreRender(e);
// Adjust each data row
foreach (GridViewRow r in Rows)
{
// Get the appropriate style object for the row
TableItemStyle style = GetRowStyleFromState(r.RowState);
// Retrieve the reference to the checkbox
CheckBox cb = (CheckBox)r.FindControl(InputCheckBoxField.CheckBoxID);
// Build the ID of the checkbox in the header
string headerCheckBoxID = String.Format(CheckBoxColumHeaderID, ClientID);
// Add script code to enable selection
cb.Attributes["onclick"] = String.Format("ApplyStyle(this, '{0}', '{1}', '{2}')",
SelectedRowStyle.CssClass,
style.CssClass,
headerCheckBoxID);
// Update the style of the checkbox if checked
if (cb.Checked)
{
r.BackColor = SelectedRowStyle.BackColor;
r.ForeColor = SelectedRowStyle.ForeColor;
r.Font.Bold = SelectedRowStyle.Font.Bold;
}
else
{
r.BackColor = style.BackColor;
r.ForeColor = style.ForeColor;
r.Font.Bold = style.Font.Bold;
}
}
}
I have several checkbox controls on my web form that are not server controls (runat="server") How can I access these controls form my C# code? Can this be done with document.GetelementById from the server side using C#? Or some other technique?
I am not allowed to make these server controls (runat=server) because of a requirement.
I have 3 panels:
<asp:Panel ID="ParentPanel" runat="server">
<asp:Panel ID="AnnoyingPanel" runat="server">
<asp:Panel ID="P" runat="server">
</asp:Panel>
</asp:Panel>
</asp:Panel>
How can I check if P is child of ParentPanel? Is there some LINQish way to do it?
Is there some more optimized way than the one I provided? Maybe using Linq?
I created one method in master page, I want to use that method in some other page(Child or Content page).I tried this method but No luck, it's not working in Master Page:
public partial class TestMaster : System.Web.UI.MasterPage
{
public void XXXX()
{
}
}
I'm trying to call this method in child page like
TestMaster MyMasterPage = (TestMaster )this.Master;
MyMasterPage.
In my ASP.NET main page I have one hidden field and and one button. When the user clicks the button I am showing the pop up (child page). I need to access a Hidden field while the pop up is loading. How could I access the Hidden field using c#?
View 2 RepliesI have a div on my master page and I want to use it for showing page errors. I have an error display class and it works fine. My problem is that in some instances, the error gets displayed even before the tag resulting in (non)-display of the message. This is mostly with code that has response.redirect.
I want to counter this by having the error shown on a div within my master page.
How can I access <div id="errorSegment" runat="server">?
How to access control in other aspx page from other aspx page in asp.net
View 2 RepliesI am to access a method on my master page. I have an error label which I want to update based on error messages I get from my site.
public string ErrorText
{
get { return this.infoLabel.Text; }
set { this.infoLabel.Text = value; }
}
How can I access this from my user control or classes that I set up?