How to define HeaderTemplate and ItemTemplate to the Repeater at runtime TBD
VB.NET Dim ds As DataSet Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load ds = ’Assign proper value to dataset Dim dc As DataColumn Dim dr As DataRow Dim rpthdr As New TemplateBuilder Dim rptitem As New TemplateBuilder Dim strval As String For Each dc In ds.Tables(0).Columns If strval = ” Then strval = dc.ColumnName & ‘ ‘ Else strval = strval & dc.ColumnName & ‘ ‘ End If Next rpthdr.AppendLiteralString(strval) Repeater1.HeaderTemplate = rpthdr Repeater1.DataSource = ds Repeater1.DataBind() End Sub Function getData(ByVal objContainer As System.Web.UI.WebControls.RepeaterItem) As String Dim i As Integer Dim strval As String = ‘<br>’ For i = 0 To ds.Tables(‘table’).Columns.Count – 1 If strval = ” Then strval = objContainer.DataItem(i).ToString & ‘ ‘ Else strval &= objContainer.DataItem(i).ToString & ‘ ‘ End If Next strval = strval & ‘<br>’ Return strval End Function C# DataSet ds; private void Page_Load(object sender, System.EventArgs e) { ds = something; DataColumn dc; DataRow dr; TemplateBuilder rpthdr = new TemplateBuilder(); TemplateBuilder rptitem = new TemplateBuilder(); string strval; foreach (int dc in ds.Tables(0).Columns) { if (strval == ”) { strval = dc.ColumnName + ‘ ‘; } else { strval = strval + dc.ColumnName + ‘ ‘; } } rpthdr.AppendLiteralString(strval); Repeater1.HeaderTemplate = rpthdr; Repeater1.DataSource = ds; Repeater1.DataBind(); } string getData(System.Web.UI.WebControls.RepeaterItem objContainer) { int i; string strval = ‘<br>’; for (int i = 0; i <= ds.Tables(‘table’).Columns.Count – 1; i++) { if (strval == ”) { strval = objContainer.DataItem(i).ToString + ‘ ‘; } else { strval += objContainer.DataItem(i).ToString + ‘ ‘; } } strval = strval + ‘<br>’; return strval; }
How to change the imageurl of the image control that exists in a usercontrol
In the .ascx: <asp:Image id=’Image1′ runat=’server’></asp:Image> In .aspx VB.NET <uc1:UCImage id=’UCImage1′ source=’b2346.jpg’ runat=’server’></uc1:UCImage> Dim UC As UserControl Dim imgUC As System.Web.UI.WebControls.Image UC = Page.FindControl(‘UCImage1’) imgUC = UC.FindControl(‘Image1’) imgUC.ImageUrl = ‘b2346.jpg’ C# UserControl UC ; System.Web.UI.WebControls.Image imgUC ; UC = (UserControl)Page.FindControl(‘UCImage1’); imgUC =(System.Web.UI.WebControls.Image)UC.FindControl(‘Image1’); imgUC.ImageUrl = ‘b2346.jpg’;
How to add user control dynamically into another usercontrol
Here is an example of adding one UserControl into another: uc1.ascx: <asp:Label runat=’server’ text=’uc1′ ID=’Label1′ /> <asp:Panel runat=’server’ id=’p1′ >Panel UC1</asp:Panel> uc2.ascx: <br><asp:Label runat=’server’ text=’uc2′ ID=’Label1′ /> VB.NET Dim uc1 As UserControl = CType(LoadControl(‘uc1.ascx’), UserControl) Controls.Add(uc1) Dim uc2 As Control = uc1.LoadControl(‘uc2.ascx’) Dim p1 As Control = uc1.FindControl(‘p1’) p1.Controls.Add(uc2) C# UserControl uc1 = (UserControl)LoadControl(‘uc1.ascx’); Controls.Add(uc1); Control uc2 = uc1.LoadControl(‘uc2.ascx’); Control p1 = uc1.FindControl(‘p1’); p1.Controls.Add(uc2);
How to pass a parameter to a user control?
Create a User Control Below Code goes in User Control <asp:ImageButton id=’ImageButton1′ runat=’server’></asp:ImageButton> Create a property called source VB.NET Public Property source() As String Get Return ImageButton1.ImageUrl End Get Set(ByVal Value As String) ImageButton1.ImageUrl = Value End Set End Property C# public string source { get { return ImageButton1.ImageUrl; } set { ImageButton1.ImageUrl = value; } } Now in your webform: Drag and drop User Control and set the source property. <uc1:UCImageButton source=’b2346.jpg’ id=’UCImageButton1′ runat=’server’></uc1:UCImageButton>
Are there any settings on the application level to make certain elements appear on every page without having to manually insert code or insert UserControls?
You can use HttpHandlers and/or HttpModules to insert information on all pages transparently. Check out Bipin Joshi’s article Extending ASP.NET with HttpHandlers and HttpModules