If I wanted to add a new item to a <List> with the Data key name from a gridview how would I go about doing it? example.
List<myClass> myList = new List<myClass>();
myList.add(new myClass(*//The value of the data key name that has been clicked*));
A user might click on another item so it would be repeated etc etc.
I have a gridview in which one of the columns is a DropDownList.
In another column I have a TextBox and a button next to it.
I want to use the OnClick event of the button to add the text in the The TextBox as a new list item in the DropDownList of that row.
I've this code wit no success:
protected void btnAdd_Click(object sender, EventArgs e)
i have a dropdownbox and a gridview what I want is to have a list item which populates all data in a gridview. I have tried using list item selected value=0 but to no avail. what is the easiest way to achieve this?
View 1 RepliesI have a dropdown list in the edittemplate of a gridview and now it selects the first value that comes from the datasource. How can I get it to select it's original value? Where do I put the code?
View 9 RepliesI have used gridview item template , which has two dropdown list. The first dropdown list is binded from database to the dropdown list. I have using the below code , to show the select message in dropdown list before selecting any item from dropdown list. In first row its show me --Select-- message and my vaues.. if i select some value form dropdownlist and click add new button it will create a new row dynamic then in previous row again it come back --Select-- message. on going to second row. I need to remain first row user selected value on going to next row. The New row will show --select-- message..
<asp:DropDownList id="DropDonList2" tabIndex=11 runat="server"
I have a dropdown list within a details view that allows me to set 1 or many categories to a perticular record(in this case a photo). The select command in this case only displays those catetegories that are not already attached to the selected photo.
all works well and as you select a category and add it to the database the category is removed from the dropdown list and is added to a gridview which shows all categories that photo is stored with.
My Problem is that when i delete the category from the gridview the dropdown list does not delete with said deleted item unless i do a "click in URL bar and press enter" to totally refresh the page.....
how to refresh the dropdown list in the details view after the gridview item has been deleted?
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I am using list view to display the the data but i am getting an error like An item placeholder must be specified on ListView 'ListView1'. Specify an item placeholder by setting a control's ID property to "itemPlaceholder". The item placeholder control must also specify runat="server.Even i have specified the itemplaceholder id but no use still same error.
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I'm trying to add a list item to a gridView dropDownList for when a certain value is in a certain cell in the gridview's edit mode:
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I'm not getting any error but the 'if' is being skipped - the value of row.Cells[5] is not being read.
I have written the piece of code below to get a productID from a gridView when the user clicks on the select link.
Convert.ToInt32(GridView1.SelectedDataKey.Values["productID"])))
However, if a user clicks on this more than one click the newer value replaces the previous. Is there a way to keep adding to the cart list when the user clicks on a new item?
Edit:
Here's my code for the Shopping Page:
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I dont know if the location of creating the list is important? Wasn't sure if it was placed in the click event if it would keep creating a new instance?
Then for the Basket Page I have:
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I have a list with 2 sorts of items. Items that have actual values (1,2,3,4 etc) and items that are like group headings so all their values are set to 0. If someone decides to select a group heading - which has a value of 0, is it possible to redirect them to my 'Select an item' item which has a value of ""?
If worse comes to worse, I can just reconstruct the entire list, although if possible I'd like to avoid it.
i use a dropdownlist in a page, with its items taken from a mysql database
i also use autopostback property...my problem here is that, every time i selecct an item, the first item in the list gets seelected
I have a drop down list control populated with items and some code to take the currently selected item value. The problem is I only get the value of the first item in the list regardless of what item is actually selected. Here is my code to populate the drop down:
protected void displayCreateCategories()
{
StoreDataContext db = new StoreDataContext();
var a = from c in db.Categories
orderby c.Name
select new{catName= c.Name,
catId=c.CategoryID};
ddlCategory.DataSource = a;
ddlCategory.DataTextField = "catName";
ddlCategory.DataValueField = "catId";
ddlCategory.DataBind();
}
To get the value of the currently selected item which in my case is always of type integer I do label1.text=Convert.toInt32(ddlCategory.SelectedValue); I get the selected value, but it is always for the 1st item in the list. I'm pulling my hair out over this.
Clicking the label of a drop down list, re-sets the selected value to the first item in the list. This has a history of causing data entry problems when users accidently click on the label.
In the below example ddlContactType has a selected value as 'PRIMARY' and whenever i click on the lblContactType Text, the dropdown box Selected value is changing to "Select One" Text.
How to prevent this one. It should be on PRIMARY Only.
<p>
<tr> <td ><asp:Label ID="lblContactType" Font-Bold="true" Text="Contract Type: *" ForeColor= "red" runat="server" AssociatedControlID="ddlContactType"></asp:Label> </td> <td > <asp:DropDownList runat="server" ID="ddlContactType" DataSourceID="SqlDataSource2" AppendDataBoundItems="true"
DataTextField="TYPE" DataValueField="ID" SelectedValue='<%# Bind("CONTACT_TYPE_ID") %>'>
<asp:ListItem Text="Select One" Value="0" Selected="True"></asp:ListItem>.......
I have a requirement in my application that, while saving the application, need to get all the value from drop down list and pass it to the view model. But application should not allow the user to select more than one item from drop down list manually, ie, only one value at a time. My view model is like ...
public class ListManagement
{
public IEnumerable<selectListItem> InactiveProduct { get; set; }
public string[] InactiveProductSelected { get; set; }
public IEnumerable<selectListItem> ActiveProduct { get; set; }
}
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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 a master page which has an unordered list in this way:
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These links are directed to my content pages. I am able to highligt the selected list item on hover and on active.
But I do not understand how I can highlight the selected list item as long as the user is on that specific page/link (current list item). I know that we can specify a seperate body tag and id for each of the content pages and then use CSS to highlight the current list item, but all this code rests already inside a body tag in the master page.
I am having an unordered list like:
<ul style="list-style: square url(Images/rssIconSmall.png)">
<li><h3>All Items</h3></li>
<li>Item1</li>
<li>Item2</li>
<li>Item3</li>
I have a datalist that gets data from my table . One of the columns is "LinkUrl"which holds a string link to another page.On my aspx page I have the data list and in the item template I want to make LinkUrl Clickable so it goes to the URL stored in the data table
( DataList1 )
( Item Template )
<asp:Label
ID="LinkUrlLabel"
runat="server"
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I want to access a dropdown control value of each list item as soon as it is created. I tried with ItemCreated and ItemDataBound events but I am getting null contro when I try to access control as shown below:
ListViewDataItem item = (ListViewDataItem)e.Item;
int LstIndex = item.DataItemIndex;
RadComboBox ddlCategory = (RadComboBox)(listView1.Items[LstIndex].FindControl("rdComboCategory"));
Also, I get listview.item.count zero. IS there any event where I will get listitem count and list items?
I have a simple databound dropdownlist. On top, I have a default selection, '--Please Select--', followed by another default selection, '-- Other --'. Here's the script:
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Now, my user wants the '--other--' selection to appear on the BOTTOM of the dropdown as opposed to right sfter '--Please select--'. How do I accomplish this?
I have a databound FormView with a dropdown list of categories. All works as expected, but I want to provide the facility for the user to add a new category to the list and I can't find an elegant way to do it. My current approach is to have a simple modal popup (Ajax toolkit) with a FormView (bound to the Categories table). That successfully inserts the new row, but it doesn't show in the dropdown so it can't be selected. I can force a refresh by calling formview.DataBind() in a suitable event handler, but that of course moves the formview off the selected record and loses any changes the user may have made.
Is there a convenient way (perhaps using AJAX, avoiding a postback entirely) to update the Categories table and refresh the dropdown without moving off of the current FormView's record? I feel sure this
must be a frequent and basic requirement, but I've not found any mention of how to implement it.
[ASP.Net 4.0, by the way]
I've put together the following code which generates a dropdownmenu list (values from a database) in a repeater control, then adds a final item. I can make it selected, but I'd like it to appear at the top, rather than the bottom as it does now.
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I have dropdownlist(width=150px fixed)
when lsititem is selected which is greater than 150px width
then dropdown width should increase autamatically depending on value selected
i have a dropdown list in edit mode and read only mode. If users upload pictures, i want them to chose a category for the uploaded pics and display it in a gridview as below.(See Picture below). When i include "SelectedValue='<%# Bind("CategoryID")" in edit and item template mode, i get this error "'PictureReadOnlyCategories' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value "
When i removed the "SelectedValue='<%# Bind("CategoryID")" from edit and item template, i get the result on the pic below(screenshot). If u can see the pic below the category is not selected, it just display the -- No Category -- even when i chose a category for the pic. I want when a pic is uploaded and i category chosen, to display on the gridview. The code for the error message is below:
<EditItemTemplate>
<asp:DropDownList ID="pictureEditCategories" runat="server"
AppendDataBoundItems="True"
DataSourceID="categoriesDataSource"
DataTextField="Name" DataValueField="CategoryID"
SelectedValue='<%# Bind("CategoryID")
%>' ValidationGroup="PictureEdit" >
<asp:ListItem Value=""
Text="--No Category -- "/>
</asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:DropDownList ID="PictureReadOnlyCategories" runat="server"
AppendDataBoundItems="True" DataSourceID="categoriesDataSource"
DataTextField="Name" DataValueField="CategoryID" Enabled="False"
SelectedValue='<%# Bind("CategoryID")
%>' ValidationGroup="PictureEdit"
>
<asp:ListItem Value="">-- No Category --</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Title"
SortExpression="Title">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" EnableViewState="False"
Text='<%# Bind("Title") %>'></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator4"
runat="server"
ControlToValidate="TextBox1"
Display="Dynamic"
ErrorMessage="must enter a title"
ValidationGroup="PictureEdit"></asp:RequiredFieldValidator>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("Title")
%>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Description"
SortExpression="Description">
<EditItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Columns="25" Rows="4"
Text='<%# Bind("Description")
%>' TextMode="MultiLine"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator5"
runat="server"
ControlToValidate="TextBox2"
Display="Dynamic"
ErrorMessage="you must enter a description"
ValidationGroup="PictureEdit"></asp:RequiredFieldValidator>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("Description")
%>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Date Added"
SortExpression="UploadedOn">
<EditItemTemplate>
<asp:Label ID="Label4" runat="server" Text='<%# Bind("UploadedOn")
%>'></asp:Label>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Bind("UploadedOn")
%>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:ImageField DataImageUrlField="PictureID"
DataImageUrlFormatString="~/UploadedImages/{0}.jpg"
HeaderText="Image"
ReadOnly="True">
<ControlStyle Width="100px"
/>
</asp:ImageField>
</Columns>
<EditRowStyle BackColor="#2461BF"
/>
<FooterStyle BackColor="#507CD1"
Font-Bold="True" ForeColor="White"
/>
<HeaderStyle BackColor="#507CD1"
Font-Bold="True" ForeColor="White"
/>
<PagerStyle BackColor="#2461BF"
ForeColor="White" HorizontalAlign="Center"
/>
<RowStyle BackColor="#EFF3FB"
/>
<SelectedRowStyle BackColor="#D1DDF1"
Font-Bold="True" ForeColor="#333333"
/>
<SortedAscendingCellStyle BackColor="#F5F7FB"
/>
<SortedAscendingHeaderStyle BackColor="#6D95E1"
/>
<SortedDescendingCellStyle BackColor="#E9EBEF"
/>
<SortedDescendingHeaderStyle BackColor="#4870BE"
/>
</asp:GridView>
I didn't had any problem using datagrid to display Sql table on ASP.NET page,
but as the table grows so as the datagrid, and now the item list is too long for one page.
So I would like to break the datagrid into several pages with page numbers. ( <1,2,3,4> click the number to go to next page)
My simple datagrid code:
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