Forms Data Controls :: Programmatically Displaying An Image In Gridview?
Sep 24, 2010
I have a list of image names stored in a database, along with the id of the property they are associated with. I'd like to be able to display all of the images in a gridview and then allow the user to select the required image.
The problem I'm having is that the gridview is not displaying. I'm pretty sure it's something basic that I've missed, but can't for the life of me see what it is!
My gridview code in my aspx page:
[Code]....
My code behind (propId is the property id):
[Code]....
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Mar 30, 2011
I have image in the image folder and in my oracle database I have a column with the name IMG which has the name of the image like ab.jpg
I have another column with name IMG1 which is storing the whole url like images/ab.jpg
I can see all the values of my database table in my dataset as well including IMG column and IMG1 column
In my aspx file I wrote code
<asp:imagefield dataimageurlfield="IMG"
dataimageurlformatstring = "~/images/ab.jpg"/>
but it is not displaying anything, however aspx page is working fine, it is showing a field but no image and it is blank, same is the case with IMG1 column as well
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Nov 21, 2010
I have a gridview which displays thumbnails in the first column and details in the other columns. The thumbnail URL is being retrieved using the following:
[Code]....
However, if the thumbnail cannot be located, a white box with a cross appears instead (as expected).
To handle this better, I would like to display a different image if the thumbnail cannot be located for any reason, for example an image saying "Image Cannot Be Displayed". But I am unsure of how to do this, of even where to do this. Essentially I need to assess the value that the datagrid is using for the particular URL when it is databound. But can I put VB.NET code in this?
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Oct 25, 2010
I have a coloumn in a database table in which i am storing the candidates photo in a binary format.
now i have to show these photo in a gridview according to the candidates rollno. i am trying to use the imagefield of a gridview control to display the photo but it is not displaying the photo in a grid view
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Feb 23, 2010
i am currently facing some problem retrieving image for display on a gridview control. the Image data type in the data table is "image". the data that is stored inside the database is in this format "<Binary data>". may i ask if it is possible tojust retrieve a image data of this format and display in the gridview? or do i need to store the image in a image folder for retrieval?
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Apr 29, 2010
I am trying to display images in a datalist.
I derive the list of images as follows have a drodown list which contains the possible filders. The user selects the folder and clicks a button to display the images. On the button click I get the contents of the folder using getfileinfo|(0 and add the details to a datatable. I create a field in the table that contains the path and the imagename (fieldname imagePath)
To display the image
<asp:Image
ID="Image1"
runat="server"
ImageUrl='<%#Eval("Imagepath")%>'
[Code]....
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Oct 6, 2010
My database table contains the image file path which will be stored from a file upload control.The image path in the table will be like "C:ProjectsprojectnameprojectfolderFiles1_129308367798080000_images1.jpg"
I am trying to display that image through a datalist control as follows
<asp:DataList ID="cobrandlogolist" runat="server">
<ItemTemplate>
<asp:Image id="CobrandLogo" ImageUrl='<%# DataBinder.Eval(Container.DataItem, "CobrandLogo") %>' Height="100px" Width="100px"
runat="server"/>
</ItemTemplate>
</asp:DataList>
and i am retrieving the image names from the db and assigning as datasource of this datalist in the load event as follows
DataTable dt = new DataTable();
DataRow dr = dt.NewRow();
dt.Columns.Add(new DataColumn("CobrandLogo", typeof(String)));
dr["CobrandLogo"] = m_Organization.CobrandLogo;
dt.Rows.Add(dr);
cobrandlogolist.DataSource = dt;
cobrandlogolist.DataBind();
But it is not displaying the image in the form.
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Jul 2, 2010
I have a data list view on a site.. Everything so far is done with minimal coding so I hope to find a similar solution for this as well :) (if such exists, of course)
When I display images from database, i have a default image that is to be displayed if there is no image in the database...
so, the database is containing links, and in the listview I display those links through the image component...
how to display DEFAULT img when there is no link in the database?
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Mar 8, 2011
I have one filed that is encrypted using Rajindal algorithm and stored in MSSQL db.When I retrieve that column in gridview it's displayed in encrypted. I have the code that decrypts it but the problem is:How can I all loop throw this column values in the gridview and decrypt them all and display it in the gridview decrypted.See my code below:
[Code]....
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May 9, 2010
I have problems building a GridView programmatically. My code is:
[Code]....
This displays the GridView with the following problems:
1. The Html constructed in the Subject column displays on the page as raw Html. The source code shows the Html characters in their ASCII form. The function HTMLEncodeSpecialCharacters is obviously incorrect.
2. The PagerSettings display the page numbers only (1 2 3 4) and not the First and Last text (want to display << 1 2 3 4 >>) despite setting PagerSettings.Mode = PagerButtons.NumericFirstLast.
3. Clicking the page numbers is always one page behind. For example, when the page is opened, page 1 displays. If I click 2, page 1 still displays. Then click 3, page 2 now displays. Click page 4, 3 displays. Click 2, 4 displays etc etc.
4. The column headings are aligned in the centre despite setting HeaderStyle.HorizontalAlign = HorizontalAlign.Left.
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Nov 17, 2010
I have a GridView which pulls info from a SQL DB. It works fine. I use a CMS to upload the data which includes thenumber referred to below.
The last (rightmost) column in the GridView is a number.
I'd like to know how to know how to:
1) Make a further column visible (to the right of the number) which contains a Button BUT only when the user is logged in.
2) Make that Button call a function (the workings of the function are irrelevant here) and pass to that function the number in the previous column.
I know I could use a LoginView with two GridViews, one for logged in (showing the Button) and one for anonymous (without the Button), but then I'd have to put the Button in the database... I think.
A better idea would be to add the Button column programmatically.
how this can be done and how the Button in each row, when clicked, can pass whatever number is to its left as a parameter?
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Aug 9, 2010
i have this code for making gridview datasource :
[Code]....
how i can add checkBox in gridview instead of (alpha or beta ) at tbl.row.add for is_active ?when is_active is true then checkbox.checked = true and else if is_active is false then checkbox.checked = false ??
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Jun 8, 2010
Few Issues with below xml:
<?xml version="1.0" encoding="utf-8"?>
<Results>
<Products xmlns="">[code]....
1) How to bind this xml Using DOM Model to GridView from serverside? I don't want to pull xmldatasource and gridview with columns on FRONT end(aspx).
2) How to dynamically bind the nodes DesignDate, SoldDate....as columns to Gridview, coz there can be many columns with different column names and I don't to specify by saying: HeaderText="DesignDate". I would like to generate this dynamically from serverside.provided with a code to make this working.
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Feb 12, 2010
How can I programatically call a gridview row when it is loaded based on the primary key. For example, say I have a record in the gridview where the column name is ID (Identity Field) and has the number 37 in it. When the gridview loads up, I need to get the rowindex where the primary key = 37 and have that row automatically selected.
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Jan 4, 2011
I have already google the question, but couldn't found any relevant post.1) I want to make gridview's one column () editable according to some boolean value (flag). If flag is true when the edit is clicked, related column would be editable (text field), otherwise related column would be label.2) Same again, I want to make enable delete button in some rows and not some rows according to that flag.
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Feb 12, 2010
I have to add row in gridview dynamically when a button is clicked on my page
Each Row which have to be added contains a dropdownlist(ddlQues) in which questions are binded
On selecting question from ddlQuestion I have to bind another dropdownlist(ddlAnswers)with respective
answers in that row of gridview
So autopostback property of ddlQuestion is set to be true
Everytime when button is clicked a new row is inserted in gridview and same process repeats............
I had tried following javascript:
<script type="text/javascript">
function AddNewRecord()
{
var grd = document.getElementById('<%= gvResponse.ClientID %>');
alert(grd);
var tbod=grd.rows[0].parentNode;
var newRow=grd.rows[grd.rows.length - 1].cloneNode(true);
tbod.appendChild(newRow);
return false;
}
</script>
and calling this function on button
<asp:Button ID="btnResponse" runat="server" Text=" New Response" CssClass="button3" OnClientClick="return AddNewRecord();" />
Also I tried to solve it by C#
By both ways(either by javascript or by C#)New Row is added in gridview
But when I select question from ddlquestion then page is loaded and and the inserted row in gridview disappears
I am using asp.net 2.0 with C#
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Dec 7, 2010
i want to create a gridview programatically and add the data programatically.
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Nov 23, 2010
I was wondering what would be the best pratice to databind a gridview programmatically.Normally i put my databind code in the page_load() but is there a way to reduce the number of times the databind method is called?I mean... the page_load() method seem to be called a lots of times when doing callbacks with the grid.
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Jan 8, 2010
After binding a gridview to a datareader - Im trying to set the width of the first column by using :
[Code]....
this is giving me an error : Index was out of range. Must be non-negative and less than the size of the collection.
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Mar 24, 2010
I've programatically created a DataView item by adding columns and rows to a table in the class file. Then I add that to my webform using a GridView. I'd like to hide some of the columns so that the end user doesn't see them but still be able to access their values.
How do I do this programatically? The table.Columns.Count returns the actually number of columns. Somehow when it converts into a DataView, it is only returning 1 column.
//From class file
[Code]....
//From webform
[Code]....
In this example, I want to hide the ID column.
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Nov 3, 2010
I have a gridview with bound fields and a templateField that receives data from a submit button which, depending upon the selected object, i.e. dropdown 1, 2, or 3, return a result set. The gridview also has a checkbox column which is used as a marker to determinie the rows to be added to and existing table. If a user selects multiple row, those rows are written to the database. Everything works.
Now, I need to add additional functionality to the gridview:
Upon selecting the checkbox, programmatically the accompanying row must become editable; for each row presented.
Deselected the checkbox, return the gridview row to a read-only state.
There are 14 columns, one of which is a dropdown which needs to maintain its default value.
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Sep 28, 2010
I want to hide the select button in my grid view programmaticlly in the form startup. how to do this?
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Dec 14, 2010
In my table I have 3 fields:
[inFrmDate] (this is the key field), [inFrmData], [totFrmData] (this accepts nulls)When I try to add [inFrmDate], [inFrmData] to the GridView I get the messageto the effect that the:
@inFrmDate scalar is not declared.
But as you can see from below it is declared:
<asp:SqlDataSource
ID="SqlDataSource1"
runat="server"
[code]....
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Dec 7, 2010
i want to sort the datagrid(gridview) programatically.
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Mar 8, 2011
we're creating a GridView to display news articles programmatically (not using a SQL database).
We can create & display the GridView, but are having a devil of the time to get the hyperlinks in SetupGrid() attached to the titles
of the articles in the GridView. Below is our .aspx code and .vb code of how we create the GridView. Any ideas on what we should do to get the hyperlinks array of strHyperlinks() in SetupGrid() to be applied to the titles in column 1 of the GridView?
[Code]....
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