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How can i access controls in a user control.? RRS feed

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    User1253338400 posted

    Hi,

    i have defined a user control with a label and a datagrid . Now i have dropped that user control on the default.aspx page no problems there.  I have populated a dataset and want to bind that to the datagrid, BUT how do i access the datagrid, ??? The datagrid name is datagrid1 and when i type intellisense doesnt recognise it. Do i have to type the control id and then the control name ?

    thanks

    robby

    Sunday, February 24, 2008 6:11 AM

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    User-891526991 posted

    You can access user controls thru properties. In your User Control code behind create a property (for accessing the controls).

    public DataGrid ChildGrid
    {
        get { return datagrid1; }
    }

    in your default.aspx page access it using usercontrol name as uc1.ChildGrid. (uc1 is the ID of your usercontrol in default.aspx page)

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Sunday, February 24, 2008 10:06 PM
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    User-813426089 posted

    u want a set property in ur user conntrol.

    Public DataGrid Grid

    {

    set

    {

       urGridid.DataSource=value;

    urGridid.DataBind(); 

    }

     

    }

     

    call this property in ur page wher u use the actaull user control.

    UserControlId.Grid=_DataSource;

     

    hope this helps

    sam

    mark this answer if this helps

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Sunday, February 24, 2008 11:00 PM
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    User-582865899 posted

    Hi I am sending an example

    This is usercontrol source code

    <%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs" Inherits="WebUserControl" %>

    <asp:GridView ID="GridView1" runat="server">

    </asp:GridView>

    <asp:TextBox ID="TextBox1" runat="server">fgggggf</asp:TextBox>

     

    this is web form Source code

     

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

    <%@ Register Src="WebUserControl.ascx" TagName="WebUserControl" TagPrefix="uc1" %>

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    <html xmlns="http://www.w3.org/1999/xhtml" >

    <head runat="server">

    <title>Untitled Page</title>

     

    </head>

    <body>

    <form id="form1" runat="server">

    <div>

    <uc1:WebUserControl ID="WebUserControl1" runat="server" />

     

    </div>

    </form>

    </body>

    </html>

     

    This is aspc.cs code

     

    protected void Page_Load(object sender, EventArgs e)

    {

    WebUserControl WebUserControl1 = (WebUserControl)FindControl("WebUserControl1");

    TextBox TextBox1 = (TextBox)WebUserControl1.FindControl("TextBox1");

    GridView GridView1 = (GridView)WebUserControl1.FindControl("GridView1");

    TextBox1.Visible = false;

    DataSet ds = Class1.Getdata();

    GridView1.DataSource = ds;

    GridView1.DataBind();

    }

     

    Try this one. Hope this helps,

    Please remember to click “Mark as Answer” on the post that helps you

    Regards

    Radhika

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Monday, February 25, 2008 5:35 AM

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    User-891526991 posted

    You can access user controls thru properties. In your User Control code behind create a property (for accessing the controls).

    public DataGrid ChildGrid
    {
        get { return datagrid1; }
    }

    in your default.aspx page access it using usercontrol name as uc1.ChildGrid. (uc1 is the ID of your usercontrol in default.aspx page)

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Sunday, February 24, 2008 10:06 PM
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    User-813426089 posted

    u want a set property in ur user conntrol.

    Public DataGrid Grid

    {

    set

    {

       urGridid.DataSource=value;

    urGridid.DataBind(); 

    }

     

    }

     

    call this property in ur page wher u use the actaull user control.

    UserControlId.Grid=_DataSource;

     

    hope this helps

    sam

    mark this answer if this helps

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Sunday, February 24, 2008 11:00 PM
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    User-582865899 posted

    Hi I am sending an example

    This is usercontrol source code

    <%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs" Inherits="WebUserControl" %>

    <asp:GridView ID="GridView1" runat="server">

    </asp:GridView>

    <asp:TextBox ID="TextBox1" runat="server">fgggggf</asp:TextBox>

     

    this is web form Source code

     

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

    <%@ Register Src="WebUserControl.ascx" TagName="WebUserControl" TagPrefix="uc1" %>

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    <html xmlns="http://www.w3.org/1999/xhtml" >

    <head runat="server">

    <title>Untitled Page</title>

     

    </head>

    <body>

    <form id="form1" runat="server">

    <div>

    <uc1:WebUserControl ID="WebUserControl1" runat="server" />

     

    </div>

    </form>

    </body>

    </html>

     

    This is aspc.cs code

     

    protected void Page_Load(object sender, EventArgs e)

    {

    WebUserControl WebUserControl1 = (WebUserControl)FindControl("WebUserControl1");

    TextBox TextBox1 = (TextBox)WebUserControl1.FindControl("TextBox1");

    GridView GridView1 = (GridView)WebUserControl1.FindControl("GridView1");

    TextBox1.Visible = false;

    DataSet ds = Class1.Getdata();

    GridView1.DataSource = ds;

    GridView1.DataBind();

    }

     

    Try this one. Hope this helps,

    Please remember to click “Mark as Answer” on the post that helps you

    Regards

    Radhika

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Monday, February 25, 2008 5:35 AM
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    User1253338400 posted

    Hi,

     when i go to the line to find the gridview i get an instance object error

    also i used WebControl not WebUserControl when declaring the usercontrol

    thanks

    robby

    Monday, February 25, 2008 6:42 AM
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    User-398804652 posted

    <STRIKE>WebUserControl WebUserControl1 = (WebUserControl)FindControl("WebUserControl1");</STRIKE>

    TextBox TextBox1 = (TextBox)WebUserControl1.FindControl("TextBox1");

    GridView GridView1 = (GridView)WebUserControl1.FindControl("GridView1");

    TextBox1.Visible = false;

    DataSet ds = Class1.Getdata();

    GridView1.DataSource = ds;

     GridView1.DataBind();

    The first line of code is not required at all.Since the control is there in aspx and is a server control,there is no need of asigning it to a webuser control. Also it shud be accessed using the "user control" class and not webusercontrol or webcontrol

     

    Saturday, January 24, 2009 7:37 AM