C# - How To Display An Image Based On SelectedValue In A GridView
Nov 4, 2010
I have built some back-end code to retrieve an image from a SQL Server database. I want to display this image on my web form based on the currenct selected value of a gridview control.
I have a page called GetImage.aspx which takes two querystring parameters, entityId and entityType. entityId is the GridView.SelectedValue and entityType is simply "T". My code for GetImage.aspx looks like this:
[Code]....
The image is not displayed, however I can see the stored procedure being executed on the database server with the correct ID when I select an item in the GridView, so that part is working, but the display of the image isn't.
i m displaying an image in gridview based on condition from sql table. That is if the colum named "availabillity" is A the image will be red n if the value is "NA" the image will be green. i am using RowDataBound event.
but i am getting error as "Cannot implicitly convert type 'System.Web.UI.WebControls.DataControlRowType' to 'bool'".
I am really new at this. I have a site that I would like to display a certain image (a colored flag) based on an entry in the database. I have a folder called flag_images, I'm using VB, and MSSQL Server 2005. I have never done anything like this. There are 4 images total. They are green.gif, yellow.gif, red.gif, and black.gif. The database table is called tblflag. There are three columns. ID (int), time_set (datetime), and flag_color (nvarchar).
I would like to display the green flag if the column flag_color is equal to green and so on for the other colors. Only one flag will be displayed at a time.
Am displaying the contents of a folder(folders n files) in a gridview.In the gridview,file/foldername ,type ,size ,Last modified date columns are displayed.the datasource for this gridview is supplied manually through a datatable.
I need to display folder/file images beside folder/filename.if the datasource is from a database we can give a if condition in the following way.
[code]....
But here in itemtemplate I am binding the data using bind expression instead of Eval .So I could not give if condition here.
How can I display folder or file image based on a condition ?the datasource is provided manually to the gridview not from a database.
I have these 4 images along with the descriptions:
Flag Description
Green Flag (WBGTI of 80 to 84.9 degrees F): Heavy exercises, for unacclimatized personnel, will be conducted with caution and under constant supervision.
Yellow Flag (WBGTI of 85 to 87.9 degrees F): Strenuous exercises or physical labor will be curtailed for unacclimatized, newly assigned personnel in their first 3 weeks. Avoid outdoor classes or work in the sun.
Red Flag (WBGTI of 88 to 89 degrees F): All PT or very strenuous work will be curtailed for those not thoroughly acclimatized by at least 3 weeks. Personnel not thoroughly acclimatized may carry on limited activity not to exceed 6 hours per day.
Black Flag (WBGTI of 90 and above degrees F): All nonessential physical activity will be halted.
1 page to set the flag condition and another page to display the flag and the description. I am new to coding and Im not sure how to do it. I do have MSSQL Server 2005 that I can use to store the data.
In my asp.net+vb web with access database there is a page which displays data as per query string and the string is PNO and all data is correctly displayed in gridview and dataview. there is a Image1.ImageUrl and i used the following code but it is not working
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Dim PNO As String PNO = Request.QueryString("PNO") Image1.ImageUrl = "C:/wing/Photos/" + PNO + ".jpg" End Sub
I want to display images in the Gridview from the image folder in this way:
But without saving the image location in the Database (i.e;i want to do this using the System.IO)
I can fetch the names of all the images present in the "img" folder but my problem is i cant set the src of the <img> tag properly which would display the image here is what i did:
I have a page which displays details and a pictures of employees. The details are stored in a SQL database and the images are on the server. How can I set a default Image to display (e.g. an Image saying "Awaiting Image") if an employee picture is missing?
I can't use NullImageUrl as the Images are not stored in the database. I can't use the solution found on [URL] as an ImageField does not accept an ID attribute.
i have a gridview binded with data when i hover mouse to row i want to display a image button to display date ,and when i click the button i want to display calender control for choose date, and next step after i choose date it will be must insert into database. and mean while a hidden label control will display and date shuld be display in it
After saving image in db how can we retrieve it in gridview like thumbnail size image and by clicking on image in gridview its open as preview. How can we do this in asp.net using c#.
I have a Gridview that I build out of a Stored Procedure, in that Gridview I have a column with a Training Grade. I would like to have a Green Check Mark or a Red Check Mark (.gif) depending on the value of the grade. This is my code so far:
If e.Row.RowType = DataControlRowType.DataRow Then
I have a web form with two drop downs.I want the gridView to display the data based on one or the other.The user can then select a record to be displayed in a detail view.This method works as long as I am only viewing the data.If the user edits the data in the detail View and then updates the detail view when the page reloads the grid goes blank.I have traced the code and there is data in the query after the update but the select statement for the LinqDataSource is overriding the code in the lqGrid_Selecting.I can make the above scenario work using SqlDataSources,but I thought LinqDataSources were the way of the future.
How can I display my table (one sql table)say i have 10 list of products in "houseware" category and the other 10 list is "food" category..
so i have 20 list in my table but only want to show only one category at one time using dropdownlist to activate one category at a time. also i want to display them using multiview component available in asp.net toolbox.. i'm using c# language..
I have been struggling for a while now to get this code working. In my mind, it should be fine. However, I cannot get this code to pass back an image url. If I explicitly name the image URL it will show, but the code will not return (or perhaps might not properly call) the url. Here are my 2 bits of code:
I have a dropdownlist in DetailsView to which items are added programmatically during DataBound event. It is working fine in InsertItemTemplate, but in EditItemTemplate i am getting this error "'branchDDL' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value".
