Forms Data Controls :: Setting DataImageUrlFormatString To Include DropDownList Value?
Jan 18, 2010
I have a dropdownlist used to select a directory for a gridview to show images in the directory.
I am wondering how I can include the value of the dropdownlist in the formatstring or some way to have it change.
I tried
<% "~" & cboFilePath.SelectedValue & "{0}"%>
with no luck. my dropdown containes "/images/" and "/images/uploadedPhotos/" and the gridview lists the files, but the images dont show.
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Similar Messages:
Jul 13, 2010
I have a listview that I am trying to initiate the connection string in codebehind. When I do it, I get the following error:The ConnectionString property has not been intialized.I know that I am successfully creating the connection string in codebehind because all other controls populate correctly from the dsame database.I do not get an error if I initiate the connection string in the html code.
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Jan 21, 2011
Trying to use a dropdownlist to query a database so that it will return all values except 1 (or more in future versions).
For example, assume you had a simple table name "MYFRIENDS" which has two fields named "GROUP" and "NAME" with the following records:
Group
Name
A
John
B
Jane
C
Tony
D
Sue
What I want to do is create a DropDownList that has only 2 list items related to the "GROUP" field. The first list item should return records from the database related to Group A only. Then, the second list item should return all other records EXCLUDING those belonging to Group A.
The drop down list should look something like this (I've put a question mark where I don't know what to do):
[Code]....
After the selection is chosen in the above drop down list, it should query the database and return the desired result. I'm using an AccessDataSource with select parameters. Here's a sample of what that looks like:
[Code]....
Things I've tried that didn't work:
I tried using "Not A" as the the 2nd list item's value. I was thinking p1 would be replaced with the value "Not A" and the query would read "WHERE GROUP LIKE Not A". But, the query syntax "Like Not" is technically wrong. I tried changing the Where Clause to "WHERE GROUP p1" and then replaced the list item's value to "LIKE A" and the second to "NOT LIKE A". Again, I was thinking p1 would be replaced to read "WHERE GROUP LIKE A" and "WHERE GROUP NOT LIKE A". I also tried changing the "SelectCommand" itself so that after the dropdownlist changed, it would first change the selectcommand first and then run the query.
Why the first 2 items didn't work became somewhat obvious to me after thinking about it for a little while. However, I would think the 3rd one would/should work... as long as you have the sequence of events correct which up to this point I haven't been able to figure out.
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Mar 11, 2011
I'm populating a dropdownlist in a formview with a different datasource from the formview's. I need to set the selected value according to the value in the formview's datasource but I'm having a hard time doing that.
Here's the code:
<asp:FormView ID="FormView1" runat="server" DataKeyNames="ID"
DataSourceID="SqlDataSource1">
<EditItemTemplate> [code]....
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Feb 8, 2011
I have a problem in setting the selected index /value in a drop down list. The list is bound by a Linq query and I want to add an item at the top of the list and set it as the selected item.
THis is the code i am using
ListItem li = new ListItem("Select", "", true);
list.DataSource = (from ap in edc.Approvers
where ! ap.approverEmail.Equals("")
orderby ap.approverEmail
select new {ap.approverEmail}).Distinct();
list.DataTextField = "approverEmail";
list.DataValueField = "approverEmail";
list.DataBind();
list.Items.Add(li);
list.Items.FindByText("Select").Selected = true;
The listItem li is the item i want to be first in the list and also selected. Adding this before the databind just loses the item.
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Apr 26, 2013
i have given 28 states as a datasource to the dropdownlist..whenever the user enters with id the dropdownlist must populate with his statename not from the first state (A to Z) as it is stored in database.?is thr any option to give query as default value to the dropdown?Â
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Apr 6, 2010
I want to include Microsoft AntiXss V1.5 library on my live site running in a medium trust setting.However, I got an error something like:Required permissions cannot be acquired.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Security.Policy.PolicyException: Required permissions cannot be acquired.I tried this in full trust setting on my development machine and everything works good.Looks like this will run only in full trust configuration.
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Nov 4, 2010
<asp:Label ID="Label13" Runat="Server" Text='<%# (decimal)Eval("CelaDnevnica") > 0 && (int)Eval("CelaDnevnicaStevilo") > 0 ?
Å t. ((double.Parse(Eval("CelaDnevnica").ToString())) / (double.Parse(Eval("CelaDnevnicaStevilo").ToString()))).ToString("0.00"): "" %>' ></asp:Label>
How to include text "Å t." according to a conditional sentence?If a conditional sentence is completed, the printed text "Å t." As well as CelaDnevnica / CelaDnevnicaStevilo
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Aug 31, 2010
I am able to export a gridview and other tables into Word, but i want to include an image in this. How is this possible. If i do as below the image is not displayed.
Response.Buffer = True
Response.ContentType = "Application/vnd.ms-word"
Response.ContentEncoding = System.Text.Encoding.Default
Response.AddHeader("content-disposition", "attachment;filename=participant_attendance.doc")
[code]...
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Jan 17, 2011
I have a gridview and I want to have a template field. In the template field I want a word over an image. I can get the image in it's own cell with <asp:ImageField DataImageUrlField="IMAGE_URL" > </asp:ImageField>
But I don't know how to access this in a templatefield
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May 11, 2010
I have a ASP.Net webform with a DropDownList control. This Dropdown gets it's values from a states table in an ObjectDatasource. The Dropdown contains states spelled out.
If I try to set the drop down to:
DropDownStates.SelectdValue = "Ohio"
I get an error that the value does not exist in the dropdown even though it does exist. But if I pad the value with the correct number of spaces to the right, it works like so:
DropDownStates.SelectdValue = "Ohio "
or
DropDownStates.SelectdValue = "Michigan "
How can I either define the dropdown without trailing spaces in the value of the dropwdown or set the SelectedValue with adding trailing spaces?
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Jan 15, 2010
My problem is I need to set selected value of a drop down list to a value I retreive from a database. The example only has a know value.
Below is the HTML and Code.
<asp:DropDownList
id="ddlCatogory1st1"
DataSourceID="srcCatogory1st1"
DataTextField="CategoryName"
DataValueField="CategoryID"
AutoPostBack="true"
Runat="server" />
<asp:sqldatasource id="srcCatogory1st1"
ConnectionString="server=(local);database=db;Trusted_Connection=true"
SelectCommand="SELECT CategoryID, CategoryName FROM Categories WHERE ParentCategoryID is null ORDER BY CategoryID"
Runat="server" ></asp:sqldatasource>
Sub Page_Load()
DISPLAY_CATEGORY()
End Sub
Sub DISPLAY_CATEGORY()
ddlCatogory1st1.DataBind()
ddlCatogory1st1.Items.FindByValue("A").Selected = True
End Sub
When I run this page I get
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 222:
Line 223: Sub DISPLAY_CATEGORY()
Line 224: ddlCatogory1st1.DataBind()
Line 225: ddlCatogory1st1.Items.FindByValue("A10").Selected = True
Line 226: End Sub
Even if I take out the databind I get the same error.
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Dec 16, 2010
A Text File contain
Hello
My Name is
Rituranjan
Father Name
Brimohan
Address
136 Jhansi
how to show in .aspx page with same format
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May 26, 2010
I have a gridview bound to a List<> which shows all compliments received by our company. The list is refreshed every time the page loads and (IsPostBack == false).When I run the application, the list binds to the gridview and all is good. I am using the gridview.SelectedIndex value to return the correct item from the list, add it to a session variable and move to a new page to edit it.This works perfectly until I insert a new record on a separate page and then return to the default page. The list refreshes correctly and displays the new record in the gridview, but the gridview indexes seem to still be attached to their previous records i.e. clicking the edit button in the top row (index 0) returns the data from the 2nd row (index 1).I've tried binding the list directly, and I've tried using an objectdatasource. I've also tried setting EnableViewState and EnableCaching to false on the gridview (and the objectdatasource when using it). None of this has updated the indexes.
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Feb 17, 2011
I am using VS 2005.I want to include Chart reading values from an XML file.
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Mar 30, 2011
I have a parent table and a child table. Essentially the parent table is called Contracts and the child is called Programs. Each Contract can have multiple Programs and in the Programs table I have a column called amount. On my page I have created a DetailsView that lists the columns of the Contract table. I would also like to include on this DetailsView a field that sums the Amounts column of all programs associated with this contract. How would I go about doing this? Currently I have a LinqDataSource that pulls all the columns from the Contract table and I have bound the DetailsView to this datasource.
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Apr 30, 2010
So I have a major issue and cannot find any solution online to solve it excepting one that is singlistviews. But i am also encounting some probs with listviews since i am not sure of to use it.Anyways so my major issue is that I have drop down lists that are being populated by a sqldatasource. Users are filling out a form selecting values in the drop down list which is fine, the prob exists with editing a record. I have the dataValuefield to be the Id of the data and the selected item in the dropdownlist id is being stored in a database. So I have the data in the database that is the Id of the selected item however I cant use the dropdownlist1.selectValue ='idNo' since that only works with listitems.
How can i access the dynamic rows in a dropdownlist that is being populated by a sqldatasource and set the selected item to a particular item?Any insight is greatly welcome. Even how to use listviews
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Nov 25, 2010
I have officially wasted about two days trying to figure out what the heck was going on with my asp.net page. I actually thought it was an issue with my updatepanel code, but after reading another post I was able to reproduce the same results. [URL]
I just manually added the following control to the page (no code behind for the listbox) and it is nested in an ajax tabcontrainer inside an updatepanel. If you set item 20 as selected the page flickers when loading that tab. I tried the css mentioned (style="overflow:hidden") on the tabcontainer,tab panel, update panel and dropdownlist, but no luck. Crazy select item 19 no flicker, 20 (which is actually the 21st item) and it does flicker. This is driving me insane. And yes this only occurs in FireFox ( running 3.6).
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Oct 27, 2010
In our asp.net web application we load the dropdown list boxes in the page load. We than set the SelectedValue of each dropdown list box to an object from session. We have event handlers for many of the SelectedIndexChanged events of the drop down lists boxes, but these do not get executed when we set the selected value programmatically.
Someone else mentioned this is by design, and only when a user manually changes the drop down list selected index, will the event get raised.
I would think this is a common scenario of wanting the selectedindexchanged event handled when setting the selectedvalue/selectedindex/listitem's selected property, of a DropDownList. What is the suggested way to handle this? Is there a significant drawback of creating a custom control inherited from DropDownList that has the functionality of raising this event when changing the SelectedIndex or SelectedValue?
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Mar 29, 2011
I have a table and 7 column name.
I bind the 7 column name in one dropdownlist.
Now the problem is,how do I extract the data value in a dropdownlist?
For example,
Dropdownlist contain 7 column name
-subject_name
-subject_code
-venue
-time
-seat_no
-admission_no
-subject_id
when I click the subject_name,I want it to appear in a gridview
Example
Math|9.00-10.00|Hall|18|09090J|...
Below is my current codes which I have a problem.
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection("Data Source= EN\SQLEXPRESS;" + "Initial Catalog=ms;Integrated Security=SSPI");
SqlDataAdapter adapSel;
string mySQL = "SELECT '" + dd_list.SelectedValue+ "' FROM examtimetable ";
adapSel = new SqlDataAdapter(mySQL, conn);
conn.Open();
DataSet dsSel = new DataSet();
adapSel.Fill(dsSel);
GridView1.DataSource = dsSel;
GridView1.DataBind();
conn.Close();
}
Previously I have bind 7 column name in my dropdownlist
protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack == false)
{
SqlConnection conn = new SqlConnection("Data Source= EN\SQLEXPRESS;" + "Initial Catalog=ms;Integrated Security=SSPI");
SqlCommand sqlCmd = new SqlCommand("select column_name from information_schema.columns where table_name='examtimetable' and COLUMN_NAME not like '%ID'", conn);
conn.Open();
SqlDataReader ds;
ds = sqlCmd.ExecuteReader();
dd_list.Items.Clear();
dd_list.DataSource = ds;
dd_list.DataTextField = "Column_Name";
dd_list.DataValueField = "Column_Name";
dd_list.DataBind();
dd_list.Items.Insert(0, "Select Option");
ds.Close();
conn.Close();
}
}
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Mar 28, 2011
Currently,below is my code.
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection("Data Source= E\SQLEXPRESS;" + "Initial Catalog=k;Integrated Security=SSPI");
SqlDataAdapter adapSel;
string mySQL = "select column_name from information_schema.columns where table_name='examtimetable' '" + dd_list + "'";....
I receive an error "Incorrect syntax near 'System.Web.UI.WebControls.DropDownList'."
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Mar 8, 2010
I want to making another dropdownlist visible=false when clicking in dropdownlist on the same detailsview?
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Jan 6, 2010
I have a parent repeater that lists the sections of the website. this repeater binds to display a table that contain another repeater of the website pages .. or may display a table that contains another two repeaters of the projects categories and sub-categories.Until now everything is going fine.
The problem comes when I try to include a query of the section ID to the link of the project categories (DataView of the projects repeaters does not contain SectionID)my question is : is there any way to call the SectionID of the first repeater in my projects categories and sub-categories repeaters?Here is my code:
[Code]....
the code behind is as follow:
[Code]....
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May 1, 2010
<%= Html.DropDownList("couriers", Model.Couriers, "--Select--")%>
will show a drop down with --Select-- as the first text im the drop down
Now its value rendered is ""
how can i set its value to "0"
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Dec 2, 2010
I am using 3 dropdown list in a gridview and the values for the dropdownlist is dynamic from database.based on first dropdown list selected value the values must fill to second dropdown and based on second dropdownlist selected value then items should load to 3rd dropdown and same for 4th dropdown list. Here if i select age,gender,sex, fist name, last name from the template name Human. The first drop down only populate the fields like Age,gender,Sex and so on., When the second dropdown list populate from the fields corresponding Template name Human, Finance, and so on.
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