Forms Data Controls :: Use The Generatedimage Control In A Detailview To Resize Images Using VB?
Sep 20, 2010I would like to know how to use the generatedimage control in a detailview to resize images using VB
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[Code]....
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May 10, 2010I searched a lot of threads but still couldn't get my problem fixed. I have to update the "regform" table with two fields: session_ and session2. These two fields are inside the detailview edititem template which bounded to dropdown list drpsession1, drpsession2 separately. I wanted to pass the update parameters to the update sql UPDATE dbo.regform SET session_=@session_, session2=@session2 where id=@id
the @session_ is bounded to a drpsession1 and @session2 is bounded to drpsession2. I used
ControlID="ctl00$ContentPlaceHolder1$DetailsView1$drpsession1" to access the dropdown list within the detailview, but still couldn't do the updates. What's wrong with my code? Do I have to use the code behind to specify the update parameters? and How to do it? TIA.
<
"
asp:DetailsView
ID="DetailsView1"
runat="server"
AutoGenerateRows="False"
DataSourceID="SqlDataSource2"
Height="50px"
Width="544px"
DataKeyNames="id"
ondatabound="DetailsView1_DataBound">
<Fields>
<
asp:TemplateField
HeaderText="Session -Part I"
SortExpression="session_">
<
EditItemTemplate>
<asp:DropDownList
ID="drpsession1"
runat="server"
DataSourceID="SqlDataSource3"
DataTextField="session_time"
DataValueField="session_id"
SelectedValue='<%# Bind("session_") %>'
AppendDataBoundItems="True"
Width="229px">
<asp:ListItem
Text="Please select"
Value="-1"
/>
</asp:DropDownList>
<asp:SqlDataSource
ID="SqlDataSource3"
runat="server"
ConnectionString="<%$ ConnectionStrings:Connstr %>"
SelectCommand="SELECT dbo.sessions.* FROM dbo.sessions"></asp:SqlDataSource>
</EditItemTemplate>
<
asp:TemplateField
HeaderText="Session - Part II"
SortExpression="session2">
<EditItemTemplate>
<asp:DropDownList
ID="drpsession2"
runat="server"
DataSourceID="SqlDataSource4"
DataTextField="session_time"
DataValueField="session_id"
SelectedValue='<%# Bind("session2") %>'
AppendDataBoundItems="True"
Width="234px">
<asp:ListItem
Text="Please select"
Value="-1"
/>
</asp:DropDownList>
<asp:SqlDataSource
ID="SqlDataSource4"
runat="server"
ConnectionString="<%$ ConnectionStrings:Connstr %>"
SelectCommand="SELECT dbo.sessions2.* FROM dbo.sessions2">
</asp:SqlDataSource>
</EditItemTemplate>
</Fields>
</asp:DetailsView>
<
asp:SqlDataSource
ID="SqlDataSource2"
runat="server"
ConnectionString="<%$ ConnectionStrings:Connstr %>"
UpdateCommand
where regform.id=@id">
="UPDATE dbo.regform SET session_=@session_, session2=@session2 where id=@id">
<UpdateParameters>
<asp:ControlParameter
ControlID="ctl00$ContentPlaceHolder1$DetailsView1$drpsession1"
Name="session_"
PropertyName="SelectedValue"
Type="String"
/>
<asp:ControlParameter
ControlID="ctl00$ContentPlaceHolder1$DetailsView1$drpsession2"
Name="session2"
PropertyName="SelectedValue"
Type="String"
/>
<asp:ControlParameter
ControlID="DetailsView1"
Name="id"
PropertyName="SelectedValue"
/>
</UpdateParameters>
</asp:SqlDataSource>
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Jan 7, 2011I am trying to use the GeneratedImage Control to display images. The images are retrieved from a data base and are stored im SQL Image format. Previously I displayed the images from an ASP.NET page serving the pictures and of course this is very slow. I am switching to the GeneratedImage Control to take advantage of the images transform and cache features. A snipit of my code is below:GeneratedImage Control :
<cc2:GeneratedImage ID="GeneratedImage2" ImageHandlerUrl="PhotoHandler.ashx" runat="server" Height="200" BorderWidth="1" BorderColor="Black" AlternateText="Profile Picture" >
<Parameters>
[code]....
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public static Image ResizeImage(string file, int width, int height, bool onlyResizeIfWider) {
using (Image image = Image.FromFile(file)) {
// Prevent using images internal thumbnail
image.RotateFlip(RotateFlipType.Rotate180FlipNone);
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[Code] ....
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but its not working at all for some reason
[code]....
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Nov 12, 2010[Code]....
I am trying to store decimal values from detailview. But it doesn't work. It stores decimal values after rounding. Let's say if I enter length/width as 4.2000 then in sql it stores as 4.0I am using sql server 2008 and the field is defined as decimal(8,4).I tried diff combination but nothing is working.
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Jan 28, 2011I use detailview control for edit all data in page but when i save data and i need save current username it's not save.
Now 1. I'm try use <asp:Parameter Name="<%$ Page.User.Identity.Name %>" Type="String" /> but not work.
2. I'm try use find control in codebehind and fill data to label in detailview but not work.
Below is my code.
[Code]....
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<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AutoGenerateColumns="False" DataSourceID="RCR_DSM" AllowSorting="True"
DataKeyNames="PartNumber" AutoGenerateSelectButton="True">
<Columns>
[Code]....
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