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Stored Procedure some columns to gridview

I would like to apologize if this has been asked in a different way before. I couldn't find any links specific to this question.
I'm currently learning how to implement GridViews on an ASP.Net web forms application, changing to grid views from a repeater. The repeaters had been binding to some columns retrieved by a stored procedure on our SQL Server and then displaying to the page. Due to the large amount of data, we decided that using the paging feature associated with grid views would improve our performance. However, when I have the grid view bind to the data source, all of the columns from the stored procedure are displayed. I believe I have the syntax correct:
<asp:GridView ID="CECreditGridView" runat="server" DataSourceID="testSqlSource" AllowPaging="true" PageSize="100">
<Columns>
<asp:HyperLinkField DataNavigateUrlFormatString="CECredit_Detail.aspx?CECredit_ID={0}" DataNavigateUrlFields="CECredit_ID" ItemStyle-CssClass="actionLinkView" />
<asp:HyperLinkField DataNavigateUrlFormatString="CECredit_Update.aspx?CECredit_ID={0}" DataNavigateUrlFields="CECredit_ID" ItemStyle-CssClass="actionLinkEdit" />
<asp:HyperLinkField DataNavigateUrlFormatString="CECredit_Detail.aspx?CECredit_ID={0}" DataNavigateUrlFields="CECredit_ID" ItemStyle-CssClass="actionLinkDelete" />
<asp:BoundField HeaderText="ID" DataField="CECredit_ID"/>
<asp:HyperLinkField HeaderText="Session Title" DataNavigateUrlFormatString="CECredit_Detail.aspx?CECredit_ID={0}" DataNavigateUrlFields="CECredit_ID" DataTextField="CECredit_Name" />
<asp:HyperLinkField HeaderText="Person" DataNavigateUrlFormatString="Person_Update.aspx?Person_ID={0}" DataNavigateUrlFields="Person_ID" DataTextField="FullName" />
<asp:HyperLinkField HeaderText="Type" DataNavigateUrlFormatString=“CECreditType_Update.aspx?CECreditType_ID={0}" DataNavigateUrlFields="CECreditType_ID" DataTextField="CECreditType_Name" />
<asp:HyperLinkField HeaderText="Status" DataNavigateUrlFormatString="CECreditStatus_Update.aspx?CECreditStatus_ID={0}" DataNavigateUrlFields="CECreditStatus_ID" DataTextField="CECreditStatus_Name" />
<asp:BoundField HeaderText="Expiration Date" DataFormatString = "{0:MM/dd/yyyy}" DataField="CECredit_ExpirationDate" />
<asp:BoundField HeaderText="Last Updated" DataFormatString = "{0:MM/dd/yyyy}" DataField="CECredit_RecordUpdateDate" />
</Columns>
<PagerSettings Mode="NextPreviousFirstLast" FirstPageText="First" LastPageText="Last" NextPageText="Next" PreviousPageText="Previous" />
</asp:GridView>
So my question is, is there a way to only have the called columns display? Or will I need to change the stored procedure to only return the columns I want displayed? We were trying to have the stored procedure stay the same because the code behind used a few of the other columns for validation, etc.

ASP.Net Mailto link not working

I am trying to open a mailto that will use the emailaddress from the databound field and add a custom subject line and custom body.
My mailto window pops up and the email address specific to the data field is populated, however the subject and the body remain empty.
<asp:BoundField DataField="EmailAddress" HeaderText="Refer Patient"
SortExpression="EmailAddress"
DataFormatString="<a href=mailto:{0}>{0}<?subject=Email%20Subject&body=Email%20Body%20Text > </a>"
HtmlEncode="false"
HtmlEncodeFormatString="false" />
Any suggestions on where I am going wrong?

You can switch to TemplateField, then you have much more control over the generated HTML.
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
Email Me
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>

You have invalid HTML, your HTML href attribute value is not wrapped in quotes, try this:
<asp:BoundField DataField="EmailAddress" HeaderText="Refer Patient"
SortExpression="EmailAddress"
DataFormatString='Email Me'
HtmlEncode="false"
HtmlEncodeFormatString="false" />

How to display dynamically generated images in asp.net gridview?

I have a class (POCO) that has an Image property. I use a List<> of this class as the datasource for a gridview control. Most of the properties are grabbed from the database. However, I am dynamically generating a barcode (System.Drawing.Image) in my code behind and populating the Image property in the POCO with the result prior to databinding. It is NOT possible for me to store the images on the database or the filesystem. How do I go about displaying the barcodes in the Gridview control? When I try, nothing shows and the images generate 404 errors. The code for the gridview is:
<asp:GridView runat="server" ID="gvInventoryDetail" CssClass="centerpage"
style="width: 700px;" ItemType="DisplayModels.InventoryDetailItem"
DataKeyNames="InventoryId" AutoGenerateColumns="False"
AllowPaging="True" PageSize="11" ShowHeaderWhenEmpty="True">
<Columns>
<asp:BoundField HeaderText="Barcode" DataField="Barcode"/>
<asp:TemplateField HeaderText="Image">
<ItemTemplate >
<asp:Image ID="BarcodeImage" runat="server"
Height="150px" Width="80px" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField HeaderText="Comments" DataField="Comments"/>
<asp:BoundField HeaderText="Status" DataField="Status"/>
<asp:BoundField HeaderText="Broken?" DataField="IsBroken"/>
</Columns>
<SelectedRowStyle BackColor="#89d8f6" Font-Bold="True"/>
</asp:GridView>
Any help is MUCH appreciated!

I had a similar issue when generating pie charts using another 3rd party project.
What I did was the following:
Keep the Image Tag in your Grid.
Set that Image Tag to call an ASPX Page in your site, passing what ever params you need on the URL to generate the barcode image.
In that new ASPX do the following
response.clear()
response.binarywrite() of the image.
If you browse that URL you will see the image in the browser, which means, that URL would also show the image in your Image Tag in your grid.

AutoGenerateInsertButton in Gridview

I have the following GridView
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
OnRowCommand="GridView1_RowCommand" DataKeyNames="Chart_Id"
AutoGenerateColumns="False" EnableModelValidation="True" >
<Columns>
<asp:CommandField ShowEditButton="False" ShowDeleteButton="False" ShowInsertButton="False" />
<asp:BoundField DataField="Week" HeaderText="Week" SortExpression="Week" />
<asp:BoundField DataField="Date" HeaderText="Date" SortExpression="Date" ItemStyle-Wrap="False" />
<asp:BoundField DataField="Host" HeaderText="Host" SortExpression="Host" />
<asp:BoundField DataField="Topic_1" HeaderText="Topic 1" SortExpression="Topic_1" />
<asp:BoundField DataField="Topic_2" HeaderText="Topic 2" SortExpression="Topic_2"
HeaderStyle-Wrap="False" />
<asp:BoundField DataField="Topic_3" HeaderText="Topic 3" SortExpression="Topic_3" />
<asp:BoundField DataField="Topic_4" HeaderText="Topic 4" SortExpression="Topic_4" />
</Columns>
</asp:GridView>
By default, I have the edit/insert/cancel buttons set to false.
Then in the code behind, I want to be able to set these to true during certain conditions.
string theUser = Helpers.GetUser();
string admin = "adminName";
if (theUser == admin) {
// Set the buttons to true
}
I've been looking for ways to do this, and someone suggested to use the AutoGenerate properties, and then enable them like so:
GridView1.AutoGenerateEditButton = true;
GridView1.AutoGenerateDeleteButton = true;
GridView1.AutoGenerateInsertButton = true; // This one throws an error
Only problem is, AutogenerateInsertButton does not seem to exist, in the main ASPX page or in the code behind.
Can anyone suggest some ways for me to access these properties and set them to true?
Thank you.

Why do you think that a GridView should have an AutoGenerateInsertButton property?
A GridView is a list of GridViewRows, where each row represents a record/element/item which can be edited or deleted. But it doesn't make sense to have a insert-button for each record because it already exists.
You could follow this tutorial which shows how to use the footer-row of the GridView to insert a new record.

The property AutoGenerateInsertButton exists on the DetailsView control. Whoever designed the control probably figured that you don't need an insert button for each row in the grid, since each would essentially do the same thing.
So, maybe you could display an empty DetailsView at the bottom of the grid, or just create your own insert command using a regular Button.

ASP.NET GridView using C#

I have a problem with gridview, I am using a gridview and listview on a page, when I select a row in the gridview I want to insert the data into the listview based on selection in the gridview. I am using a primary key in gridview.
PLease help me out

This is also called "Master-Detail".
You can find a great tutorial here.
In short, you need to make the row selectable.
<asp:GridView ID="ProductsGrid" runat="server"
AutoGenerateColumns="False" DataKeyNames="ProductID"
DataSourceID="AllProductsDataSource" EnableViewState="False">
<Columns>
<asp:CommandField ShowSelectButton="True" />
<asp:BoundField DataField="ProductName"
HeaderText="Product" SortExpression="ProductName" />
<asp:BoundField DataField="UnitPrice"
DataFormatString="{0:c}" HeaderText="Unit Price"
HtmlEncode="False" SortExpression="UnitPrice" />
</Columns>
</asp:GridView>
This is done with <asp:CommandField ShowSelectButton="True" /> in the code above.
The next step is to add you DetailsView to be binded to the selected element of the master gridview. This can be done because the selection return the primary key of the element, from there you can load the detail.
This do a PostBack, if you want you can use Ajax and remove the PostBack flickering.

I believe the select on the gridview should fire off the event SelectedIndexChanged(). You would use that event to create the datasource for your listview and then bind the datasource to your listview.