one drop down list cointains all country list ,when we select thet particular country the other drop down list has to show all the states in that country ,this is what i am thinking to do ,can some one guide me how to do ,and give you give some reference links
View 3 Replies
I am not able bind data to the dropdownlist from database. following is code.
DataTable dtModule = BO.GetBizModel_DDL(ServiceID);
if (dtModule != null)
{
ddlBizModl.Items.Clear();
ddlBizModl.DataSource = dtModule;
ddlBizModl.DataTextField = "BIZ_MODL_NM";
ddlBizModl.DataValueField = "BIZ_MODL_ID";
ddlBizModl.DataBind();
}
dtModule.Dispose();
- i have two drop down lists- ddl_SelectClient, ddl_SelectApplication
- when a client is selected in ddl_SelectClient, i have to show the list of the clients applications in ddl_SelectApplication
- i have written the below code in the ddl_SelectClient_SelectedIndexChanged routine to do the same
- i am getting the error("Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack") in the catch block when the ddl_SelectApplication gets binded
[Code]....
when i am selecting an item in dropdown list datasource is bind and after another selection it is bind again .but i want it bind only once.
View 4 RepliesI have the following string which is a list of urls. How do I get this to work so the url shows for the selection and also is the value?
[Code]....
ArgumentNullException: Value cannot be null.
Parameter name: container]
System.Web.UI.DataBinder.GetPropertyValue(Object container, String propName) +121
System.Web.UI.DataBinder.GetPropertyValue(Object container, String propName, String format) +8
System
I know how to bind a simple objects to a dropdown list. However I am having problems binding my objects which contains sub objects to the control.i.e. with simple object i just do ddl.DataValueField = "myproperty"
with my objects they contains sub objects which i want to bind. I have tried ddl.DataValueField = "sub-object.myproperty" which doesnt work.
I am stuck at this point "Displaying a dropdown list of Categories with a --None -- Option. I want the gridview control to display 2 dropdown list one in read-only mode and the other in edit mode. When a record is in read-only mode, the dropdownlist's enabled property will be set to false."When it's on a read-only mode, it doesn't display the selected Category. it shows but the "No Category". When i click on edit to edit or change category, it doesn't display the selected category.
The example is given below( I am reading the book Sams Teach yourself ASP.NET 2.0 by Scott Mitchell. page 628)
<asp:Label ID="UserIdValue" runat="server" Visible="False"></asp:Label>
<asp:SqlDataSource ID="picturesDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT * FROM [Pictures] WHERE ([UserId] = @UserId) ORDER BY [UploadedOn] DESC"
DeleteCommand="DELETE FROM [Pictures] WHERE [PictureID] = @PictureID"
InsertCommand="INSERT INTO [Pictures] ([UserId], [CategoryID], [Title], [Description], [UploadedOn]) VALUES (@UserId, @CategoryID, @Title, @Description, @UploadedOn)"
UpdateCommand="UPDATE [Pictures] SET [UserId] = @UserId, [CategoryID] = @CategoryID, [Title] = @Title, [Description] = @Description, [UploadedOn] = @UploadedOn WHERE [PictureID] = @PictureID">
<DeleteParameters>
<asp:Parameter Name="PictureID" Type="Int32" />
</DeleteParameters>
<InsertParameters>
<asp:Parameter Name="UserId" />
<asp:Parameter Name="CategoryID" Type="Int32" />
<asp:Parameter Name="Title" Type="String" />
<asp:Parameter Name="Description" Type="String" />
<asp:Parameter Name="UploadedOn" Type="DateTime" />
</InsertParameters>
<SelectParameters>
<asp:ControlParameter ControlID="UserIdValue" Name="UserId" PropertyName="Text"/>
</SelectParameters>
<UpdateParameters>
<asp:Parameter Name="UserId"/>
<asp:Parameter Name="CategoryID" Type="Int32" />
<asp:Parameter Name="Title" Type="String" />
<asp:Parameter Name="Description" Type="String" />
<asp:Parameter Name="UploadedOn" Type="DateTime" />
<asp:Parameter Name="PictureID" Type="Int32" />
</UpdateParameters>
</asp:SqlDataSource>
<br />
<asp:SqlDataSource ID="categoriesDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [CategoryID], [Name] FROM [Categories] WHERE ([UserId] = @UserId)">
<SelectParameters>
<asp:ControlParameter ControlID="UserIdValue" Name="UserId" PropertyName="Text" />
</SelectParameters>
</asp:SqlDataSource>
<br />
<asp:SqlDataSource ID="maxPictureIDDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>" SelectCommand="SELECT MAX(PictureID)
FROM Pictures
WHERE UserId = @UserId">
<SelectParameters>
<asp:ControlParameter ControlID="UserIdValue" Name="UserId"
PropertyName="Text" />
</SelectParameters>
</asp:SqlDataSource>
<br />
<asp:Label ID="cannotUploadImageMessage" runat="server"
Text="The photo could not be added to your album either because you did not specify a file to upload or the file specified was not a JPEG image with the file extension .JPG"></asp:Label>
<br />
<asp:DetailsView ID="dvPictureInsert" runat="server"
DataSourceID="PicturesDataSource" Height="50px" Width="125px"
AutoGenerateRows="False" CellPadding="4" DataKeyNames="PictureID"
DefaultMode="Insert" ForeColor="#333333" GridLines="None">
<AlternatingRowStyle BackColor="White" />
<CommandRowStyle BackColor="#D1DDF1" Font-Bold="True" />
<EditRowStyle BackColor="#2461BF" />
<FieldHeaderStyle BackColor="#DEE8F5" Font-Bold="True" />
<Fields>
<asp:TemplateField HeaderText="Picture">
<InsertItemTemplate>
<asp:FileUpload ID="imageUpload" runat="server" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server"
ControlToValidate="imageUpload" Display="Dynamic"
ErrorMessage="There was no file selected" ValidationGroup="PictureAdd"></asp:RequiredFieldValidator>
</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Category" SortExpression="CategoryID">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("CategoryID") %>'></asp:TextBox>
</EditItemTemplate>
<InsertItemTemplate>
<asp:DropDownList ID="pictureCategory" DataSourceID="categoriesDataSource"
runat="server" DataTextField="Name" DataValueField="CategoryID"
SelectedValue='<%# Bind("CategoryID") %>'
Visible='<%# Bind("CategoryID") %>' AppendDataBoundItems="True">
<asp:ListItem Selected="True" Value="">-- Select Category --</asp:ListItem>
</asp:DropDownList>
</InsertItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("CategoryID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Title" SortExpression="Title">
<EditItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Title") %>'></asp:TextBox>
</EditItemTemplate>
<InsertItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Title") %>'></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
ControlToValidate="TextBox1" Display="Dynamic"
ErrorMessage="you must provide a name for the title"
ValidationGroup="PictureAdd"></asp:RequiredFieldValidator>
</InsertItemTemplate>
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("Title") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Description" SortExpression="Description">
<EditItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("Description") %>'></asp:TextBox>
</EditItemTemplate>
<InsertItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Description") %>'
I am trying set up a simple dropdown list but I dont seem to be able to get it to bind to the Model. I am using Asp.Net MVC and nhibernate.
My dropdown list is declared like so:
<%= Html.DropDownListFor(model => model.Project, (IEnumerable<SelectListItem>)ViewData["Projects"], " -- Select -- ", new { name = "Project" })%>
I set up the select list like so:
ViewData["Projects"] = new SelectList(projectRepository.GetAll(), "EntityGUID", "Name", editEntity.Project);
This seems to bind the select list to the Dropdown fine, but the SelectedValue is not set.
it shows up as the default --- Select ---
Also when I save this data, the dropdown does not bind to the model, I have to manually set the object like so to save it:
entity.Project = projectRepository.GetById(new Guid(Request["Project"].ToString()));
I believe I have take the correct messures to have this item bind directly to my model. Is there something I am missing here?
I am using HTML dropdown list and binding it from ViewData ,but how i can get selected value in controller.
<%=Html.Dropdownlist("ViewDataName")%>
we have define viewdata in controller.it is fetching data in dropdownlist but i am not able to get the selected value so that i can add that value.
web form (table) with 32 dropdown fileds.paging implemented (100 rows per page)populate down button next to each controlfreeze pane implemented for first three columnsWorkinguser will change values of each drop down at runtime inorder to update the information in database.when populate down button is clicked, all the dropdown values below will be replaced with current selectio
View 1 RepliesI am trying to create a cascading dropdown list using two dropdown lists in Visual Studio 2008 Professional connecting to a SQL Server 2008 Standard database on my local machine. I have added the two dropdown lists, as well as a CascadingDropDown extenders from the AJAX Control Toolkit that corresponds with the first dropdown list. The problem I am running into is that despite the fact that I have a CascadingDropDown extender for the first dropdown list so far, and the extender is configured properly, the first dropdown list is showing Unbound in Design view. I also don't see a TargetControlID entry in the properties window for the externder.
I hard coded the TargetControlID to the extender in the Source view and, although I am not receiving any dynamic errors from the TargetControlID entry (meaning, the TargetControlID is a valid parameter, and the dropdown list I entered for that parameter exists on the same page), the dropdown list doesn't populate properly and when in Design view, not only do I not see an entry for the CascadingDropDown extender, but the target dropdown list shows as being "Unbound."
A couple of things I want to point out first:
1) I am using Master pages on this site for the header, footer and navigation. The opening and closing <form> tags, as well as the <ScriptManager> entry are in the Master page, not the content pages. I did this with the assumption that at runtime, each page would have the proper <form> tags and <ScriptManager> entry to function properly.
2) I have been able to add a CascadingDropDown extender to a page in Design view (and it initially displays properly), but by the time I have added all of the properties settings to apply it to its corresponding dropdown list, the entry appears normal in Source view but no longer appears in Design view. When I run the page, the dropdown list does not populate. Obviously, I assume that this is related to the dropdown list showing in Design view as being Unbound, but I don't know how to get the dropdown list to recognize that I have a CascadingDropDown extender that is supposed to apply to it.
Here is what the two elements look like in Source view:
<asp:DropDownList ID="ddlCompany" runat="server">
</asp:DropDownList>
<ajaxToolkit:CascadingDropDown ID="cddCompanies" runat="server" TargetControlID="ddlCompany" Category="Company" PromptText="Select a Company" LoadingText="Please Wait..." ServicePath="~/CompaniesService.asmx" ServiceMethod="GetCompanies">
</ajaxToolkit:CascadingDropDown>
To create these, I have been following Joe Stagner's example in his video on the topic (http://www.asp.net/ajax/videos/use-aspnet-ajax-cascading-drop-down-control-to-access-a-database) virtually word for word. I have set up two TableAdapters/DataSets, one for each dropdown list, and the datasets are able to accurately pull the appropriate data from the database, so I know those are working properly. I believe the problem is that the dropdown list isn't binding with the CascadingDropDown extender properly. It wouldn't bother me that I don't see a TargetControlID entry in the properies window for the CascadingDropDown extender, although I have a feeling that the absense of that property is related to the fact that the dropdown list is not binding to the extender. I searched online for causes to this problem, but I wasn't able to find any solutions.
i want to add leading space in dropdown list after binding from DB.
for that i used leftpad method but not working.
code are as below
[Code]....
I have a databound dropdownlist and have a problem with the default value it selects.When I attempt to edit a record the dropdownlist shows the first value in the list rather than the current value. I want the dropdown list to display the current value.
I'm sure this is very simple but I'm very new to ASP.NET.
I'm using .NET version 4.
How can we bind a value to a combobox or dropdown? What is the property for binding a value?
View 1 RepliesI am binding a Datagrid using a query and the dropdown using different query.On the page load i am binding both Datagrid and Dropdown successfully.But on PageIndexChanged event i am unable to bind Dropdown,but binding the grid.How to proceed in this case.
View 4 RepliesI have seen several post on this but I cant seem to make any head way. I have a createUserWizard that creates a user and on my CompleteWizardStep I have a drop down that needs data bound to it. The error I am getting is 'Object reference not set to an instance of an object.' Null referenctException my code is:
Dim iSavesCounties As New dsISavesTableAdapters.tbl_countiesTableAdapter
Dim ddNewCounties As DropDownList
ddNewCounties = CType(CreateUserWizardStep1.ContentTemplateContainer.FindControl("ddCounties"), DropDownList)
ddNewCounties.DataSource = iSavesCounties.GetData()
ddNewCounties.DataTextField = "countyName"
ddNewCounties.DataValueField = "countyId"
ddNewCounties.DataBind()
Dim iSavesCounties As New dsISavesTableAdapters.tbl_countiesTableAdapter
I have 2 drop down lists.I have a very simple dropdown list #1 that diplays a title and holds an id value which is a GUID.I know it is getting this value and sending this value as I tested sending it to a label.I have the dropdown list #1 to autopostback to dropdown list #2 that "Is supposed to get" another title and value based on the GUID value of the first dropdown list. for some reason it wont return anything. I have done 100's of these but never based off a guid value.I assume the value needs to be converted to guid before selecting it in the second dropdown list.How can I do this? or is there something I am missing?
View 9 RepliesSplit off from [URL]
Getting records From DataBase using DataTale which contain 1000 Rows, then binding to GridView using Generic List. Like above Example
GridView1.DataSource= GetData();
GridView1.Binding();
Now i want to do search, sorting & Paging in the GridView with out Postback of the Page & with out hitting the DataBase when do Paging or searching in GridView.
I have a form in which I have a dropdown list and a list box.
This dropdownlist is populated by a column in thetable . This drop down list may have values ranging from 1 to 5.
This values in the dropdownlist are to be made the caption headings of the list view control.
For insance if there are three values in the dropdown there should be three columns in the list box with the heading as the values of the dropdownlist.for 5 it should be 5.
Also there are two additional columns which would be constant.
I am trying to display data in a formview based on the value selected from the drop down list. FormView does not respond or display any data.
<b>Select a vendor:</b>
<asp:DropDownList ID="vendorDropDownList" runat="server"
DataSourceId="SqlDataSource1"
AutoPostBack="True" DataTextField="CO_Vendor_Name"
[Code]....
Does anyone know how to do this so when I select something the 1st dropdown and the 2nd one becomes visible and populates list from a Select statement. I really need help on how to do in an aspx and not on the code behind page.
View 12 RepliesI Have the gridview control with 2 dropdown list and 2 text boxes,When the textbox chnaged event happen 1 row will create and the dropdown back to initial values( its not retaining the selected values),I am binding the control after text changed method,Is there any properties needs to be set or any other way we can retain the values in postbacks?
View 4 RepliesI am binding same data Table to Combo box and List Box on the WindowsForm Load.
When I select a value in Combo box automatically that value is also getting selected in List Box and same thing when I select a value in List Box that value is also getting selected in Combo Box.
Selection should be only for that particular control, how can I achieve this ?
Plz go through my code-
<asp:ScriptManager runat="server"/>
<cc1:ModalPopupExtender ID="mpe_AddState" runat="server" PopupControlID="PanelAddState" TargetControlID="btnAddNew" BackgroundCssClass="ModalPopupBG" OkControlID="btnOk"
CancelControlID="btnCancel" BehaviorID="ModelPopUp_AddState">
</cc1:ModalPopupExtender>
<!-- Begin of Content table -->
<table width="100%" border="0" cellspacing="2" cellpadding="2" align="left">
<tr> <td>
<!-- Begin of Search Country Panel -->
<asp:Panel runat="server" DefaultButton="btnSearch">
<table border="0" cellspacing="3" cellpadding="3" align="left">
<tr> <td width="15%" >Search</td> <td width="30%">
<asp:TextBox runat="server" CssClass="textBox" ></asp:TextBox>
<asp:RequiredFieldValidator ID="rfv_txtSearch" runat="server" ErrorMessage="Field can't be left Blank" SetFocusOnError="true" ControlToValidate="txtSearch" Display="None" ValidationGroup="search"> </asp:RequiredFieldValidator>
<cc1:ValidatorCalloutExtender runat="server" TargetControlID="rfv_txtSearch">
</cc1:ValidatorCalloutExtender> </td> <td width="25%">
<asp:Button runat="server" Text="Search" ValidationGroup="search" />
</td> </tr> <tr> <td width="15%">Country</td> <td width="30%">
<asp:DropDownList id="ddlCountry" runat="server" AutoPostBack="true" Height="30px" Width="76px">
</asp:DropDownList> </td> <td width="15 %">
<asp:Button runat="server" Text="AddNew" /> </td>
<td width="25%"></td> </tr> <tr> <td> </td> </tr>
</table> </asp:Panel>
<!-- End of Search Country Panel -->
<!-- Begin of Add State Panel -->
<asp:Panel runat="server" CssClass="formTextBold"
style="width:390px; height:500px; cursor: move;" Height="278px" Width="335px">
<div> <table border="0" > <tr><td></td></tr> <tr bgcolor="skyblue">
<td colspan ="3" style ="font-weight :bold "> Enter The State Details
</td> <td align ="center"><a href="#" onclick ="HidePopup();">
<font color="red" size="+1">X</font> </a> </td> </tr> <tr> <td> </td> </tr> <tr>
<td> </td> <td> State Code </td> <td>
<asp:TextBox id="txtStateCode" runat="server"></asp:TextBox>
</td> </tr> <tr> <td> </td> <td >State Name</td> <td>
<asp:TextBox id="txtStateName" runat="server"></asp:TextBox>
</td> </tr> <tr> <td> </td> </tr>
<tr> <td> </td> </tr> <tr> <td> </td>
<td >Country Name</td> <td>
<asp:DropDownList id="ddlSelectCountry" runat="server">
</asp:DropDownList></td> <tr> <td> </td> </tr>
<tr> <td> </td> </tr> <tr>
<td width="28%" colspan="2"></td> <td >
<asp:Button runat="server" Text="Ok" Width="50px" />
<asp:Button runat="server" Text="Cancel" /> </td>
</tr> </tr> </table> </div> </asp:Panel>
<!-- End of Add Country Panel -->
.cs code is-
protected void Page_Load(object sender, EventArgs e) {
if(!IsPostBack) {
ddlSelectCountry.DataSource = Obj_BLogic.Country_List();
ddlSelectCountry.DataTextField = "Country_Name";
ddlSelectCountry.DataValueField = "Country_Id";
ddlSelectCountry.DataBind(); }
ddlCountry.DataSource = Obj_BLogic.Country_List();
ddlCountry.DataTextField = "Country_Name";
ddlCountry.DataValueField = "Country_Id"; ddlCountry.DataBind();
ddlCountry.Items.Insert(0, new ListItem("Select"));
grdState.Columns[0].Visible = false; }
I want list of countries exactly once in both the dropdownlist (ddlCountry & ddlSelectCountry). But is giving the list of countries twice.
I have a List<string> that I want to use as a datasource for the gridview, making the column a HyperlinkField type and passing the value clicked in the column in the url. My code:
private void DoBind(GridView grid, List<string> Accounts)
{
Hyperlinkfield field = new HyperlinkField();
field.DataNavigateUrlFields = Accounts.ToArray();
field.DataNavigateUrlFormatString = _urlToRedirectFromGrid;
field.DataSource = Accounts;
grid.Columns.Add(field);
grid.AutoGenerateColumns = false;
grid.DataBind();
}
I can't get this to work. The page throws an AJAX null exception when this method is called.
