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asp grid view hyperlink field not working

I have a logLink column in my database.
I have my hyperlink field in gridView as below :
<asp:HyperLinkField DataNavigateUrlFields="logLink" DataTextField="logLink" DataNavigateUrlFormatString="{0}" Text="Link" ControlStyle-CssClass="hlink" HeaderText="LOG LINK" ItemStyle-Width="6%" ItemStyle-Font-Underline="true" />
But this link is not clickable.
I want the values in the log link column of my db to come here.
Does anyone know how to solve this ?

try this.
<asp:TemplateField>
<ItemTemplate>
<asp:HyperLink ID="lnk" runat="server" Target="_blank" Text='<%# Eval("yourText") %>'
NavigateUrl='<%# Eval("logLink") %>'></asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>

How to select a cell in datagrid onClick in ASP.net C#

I am importing a column in datatable to my grid. Now I want navigate to a new page on selecting a cell in grid by fetching the selected value. I have tried this by including bound field in my grid like
<asp:GridView ID="GDV_1" runat="server" EnableModelValidation="true" AutoGenerateColumns="false" OnSelectedIndexChanged="GDV_1_SelectedIndexChanged" AutoGenerateSelectButton="false" DataKeyNames="SROID">
<Columns>
<asp:BoundField DataField="SRONameinEnglish" HtmlEncode="False" DataFormatString="<a target='_blank' href='Test.aspx?code={0}>ClickHere</a>" />
</Columns>
</asp:GridView>
Doing this way my requirement is achieved but the all cells are displaying Common text Click here instead of showing data from Database.
Please give your suggestion on how to get the value from database into cell and make it clickable. I don't want to use Select button. Please find my current output.
This is my current output I want my data from DB instead of ClickHere.

You can use TemplateField
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:LinkButton runat="server" ID="lnk<%# Eval("SRONameinEnglish")%>"><%# Eval("SRONameinEnglish")%></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
and click of LinkButton put your code to navigate anywhere.

In your case you are binding boundfield with static a tag which have href attribute so your not able to change text on that boundfield from your database.To get your approach you should
use TemplateField and bind data with text attribute using eval keyword as below example.
Try it:
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server" Text='<%# Eval("name") %>' />
</ItemTemplate>
</asp:TemplateField>
OR
you can also bind link with your hyperlink using NavigateUrl property of hyperlink as below example.
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:HyperLink id="HyperLink2" NavigateUrl='<%#Eval("YourUrl") %>' Text='<%#Eval("name") %>' runat="server"/>
</ItemTemplate>
</asp:TemplateField>
I hope it will helpful to you.

hyperlink template field onclick pass value to pageB to display its details

I am new to this:
In Visual Studio 2010, asp.net
Webpage A has a gridview with a column of hyperlink of companyid:
<asp:TemplateField HeaderText="Company" ItemStyle-Width="20%" >
<ItemTemplate>
<asp:HyperLink Text='<%# (Eval("Company"))%>' ID="HyperLink1"
Target="_blank" runat="server"
NavigateUrl= WHAT SHOULD I PUT HERE TO NAVIGATE TO PAGE B WHICH IS ALSO IN THE SOLUTION
</ItemTemplate>
</asp:TemplateField>
I want to navigate to another page that's also in the solution file, but I don't know what address to use as it's not some links that's hosted already like "google.ca"
For the new webpage, I don't want any buttons or like that, I just want a page to show the details of a company, using "select * from table where companyid= 'value_from_pageA_hyperlink'. How can I build the page so that it's url could be something like www.somepage/key=?" Or can I set up a global value so that I can pass the companyid in the hyperlink to the other page?
I have been crazed by those.

Use
<asp:HyperLink Text='<%# (Eval("Company"))%>' ID="HyperLink1" Target="_blank" runat="server"
NavigateUrl='~/PageB.aspx?companyId=<%# Eval("CompanyID")%>'/>
"~/" in an ASP.NET URL means that the address is relative to the current application.

You Can Send A Query String And Get it Through request.params
<asp:HyperLink Text='<%# (Eval("Company"))%>' ID="HyperLink1"
Target="_blank" runat="server"
NavigateUrl="page2.aspx?variablename=value"/>
and get it through
request.params["variablename"]
on another page
I think it Should work

http://msdn.microsoft.com/en-us/library/6c3yckfw(v=vs.100).aspx
<asp:TemplateField HeaderText="Company" ItemStyle-Width="20%" >
<ItemTemplate>
<asp:HyperLink Text='<%# (Eval("Company"))%>' ID="HyperLink1" Target="_blank" runat="server"
NavigateUrl='<%# GetCompanyUrl(Eval("Company"))%>'/>
</ItemTemplate>
</asp:TemplateField>
protected string GetCompanyUrl (object companyNum)
{
return "./NewPageName.aspx?companyId=" + companyNum.ToString();
}

Visibility of an ASP.Net button which depends if a file exists in database

I have a gridview which has a few rows (each with a unique rowId), and each line has a FileUpload control, now everything works okay with FileUpload.
(my uploaded file database image can be seen below)
I have the download button, which also works okay, however I want to make this button invisible if no file exists for the corresponding row.
Nothing proper comes to my mind.
My button and FileUpload control:
<asp:TemplateField HeaderText="BatchList">
<EditItemTemplate>
<asp:ImageButton ID="ibt_Download" runat="server" src="Images/Download.png" CommandName="Download" CommandArgument='<%# Container.DataItemIndex %>' ></asp:ImageButton>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="UploadBatchList">
<HeaderTemplate>
<asp:Label ID="lbl_Header" ToolTip="Upload Batch List" runat="server" Text="UBL"></asp:Label>
</HeaderTemplate>
<EditItemTemplate>
<asp:FileUpload ID="fu_UploadBatchList" runat="server" />
<asp:Button ID="btn_Upload" runat="server" Text="Upload" OnClick="btn_Upload_Click" />
</EditItemTemplate>
</asp:TemplateField>
This is how it looks on my gridView
When gridview is first created the green dots must not be visible if a file has been uploaded before.
My file database:

You can check some property of the data item (DocName in your case) if it contains a value (it might not work when copy-pasted, I'm a little bit improvising):
<asp:Button ID="btn_Upload" runat="server"
Text="Upload"
Visible='<% DataBinder.Eval(Container.DataItem, "DocName") == null %>
OnClick="btn_Upload_Click" />
Or you can create a function that will evaluate the visibility. See Mastering ASP.NET DataBinding for more.

Why doesn't User.IsInRole work in this context?

...I want to Show the 'delete' button when user is an admin, and show the 'add item' button when user is a contributor:
<!-- More code above -->
<asp:BoundField DataField="Description" HeaderText="Description" SortExpression="Description" />
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton CSSClass="TableRightLink" ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Delete"
Visible=<%# User.IsInRole(#"DOMAIN\CMDB_ADMIN") %>
Text="Delete"
OnClientClick="return confirm('Are you certain you want to delete this item?');"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<SelectedRowStyle VerticalAlign="Top" />
<HeaderStyle ForeColor="White" CssClass="TableHeader" BackColor="SteelBlue" />
</asp:GridView>
<asp:table width="100%" runat="server" CSSclass="PromptTable" Visible=<%# User.IsInRole(#"DOMAIN\CMDB_CONTRIBUTE") %> >
<asp:tablerow><asp:tablecell HorizontalAlign=Center>
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl="AddConfigItem.aspx" ForeColor="LightCyan">Add Item</asp:HyperLink>
</asp:tablecell></asp:tablerow></asp:table>
The Delete button 'visible' attribute works fine. But, the "add item' hyperlink doesn't. It always shows.
View-source tells me that %# User.IsInRole(#"DOMAIN\CMDB_CONTRIBUTE") %> isn't evaluating to anything. Any idea why this is?

Try setting it in code behind, instead of in mark up, in Page_Load. Assuming the id is promptTable (it wasn't given in your example), just add:
promptTable.Visible = User.IsInRole(#"DOMAIN\CMDB_CONTRIBUTE");
Presumably this needs to be done regardless of whether it is a postback or not.
FWIW, #Keltex is right about the control not being databound so <%# %> won't work. Unfortunately, the <%= %> syntax won't either because it always returns a string and you need a boolean value there. I couldn't find any other syntax that would work in this case. You could probably do this by turing off display using javascript, but I suspect that you don't want the table to be rendered to the page if not in the correct group (as opposed to just being hidden or removed from the DOM once on the client). Doing it in the code behind, I think is the right way to go about it.

Try:
Visible='<%= User.IsInRole(#"DOMAIN\CMDB_CONTRIBUTE") %>'
The asp:table doesn't appear to be databound.