ASP.NET

Abhijit Jana3-Sep-09 19:22

3-Sep-09 19:22

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.

Arun Jacob3-Sep-09 19:17

3-Sep-09 19:17

swtlibra wrote:
Both DataSource and DataSourceID are defined on 'GridView1'. Remove one definition.

Error is self describing.look at that. Smile | :)

I think you defined DataSourceID in the html.Check your html for GridView and remove that.
Smile | :)

swtlibra3-Sep-09 19:32

3-Sep-09 19:32

when i remove the datasource ID from gridview
it dosen't display the whole grid view Frown | :(

Abhijit Jana3-Sep-09 19:33

3-Sep-09 19:33

swtlibra wrote:
it dosen't display the whole grid view

Show us the code of GriView from aspxpage. And DataBind code from Codebehind page.

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.

swtlibra3-Sep-09 20:06

3-Sep-09 20:06

<br />
<br />
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" <br />
            DataKeyNames="Image_ID"  <br />
            AllowPaging="True" onrowdatabound="GridView1_RowDataBound" <br />
            onselectedindexchanged="GridView1_SelectedIndexChanged"><br />
            <Columns><br />
                <asp:BoundField DataField="Image_ID" HeaderText="Image_ID" <br />
                    InsertVisible="False" ReadOnly="True" SortExpression="Image_ID" /><br />
                    <br />
                <asp:TemplateField><br />
                    <ItemTemplate><br />
                        <asp:Image ID="img_1" ImageUrl='<%# Bind("Image_1") %>' runat="server" /><br />
                    </ItemTemplate><br />
                </asp:TemplateField><br />
                    <br />
                <asp:ImageField DataImageUrlField="Image_1"><br />
                </asp:ImageField><br />
                <asp:ImageField DataImageUrlField="Image_2"><br />
                </asp:ImageField><br />
                <asp:ImageField DataImageUrlField="Image_3"><br />
                </asp:ImageField><br />
            </Columns><br />
        </asp:GridView><br />
<br />
<br />
<br />
<br />

<br />
<br />
<br />
using System;<br />
using System.Collections;<br />
using System.Configuration;<br />
using System.Data;<br />
using System.Linq;<br />
using System.Web;<br />
using System.Web.Security;<br />
using System.Web.UI;<br />
using System.Web.UI.HtmlControls;<br />
using System.Web.UI.WebControls;<br />
using System.Web.UI.WebControls.WebParts;<br />
using System.Xml.Linq;<br />
using System.Data.OleDb;<br />
using System.IO;<br />
<br />
public partial class samplepage : System.Web.UI.Page<br />
{<br />
    OleDbConnection con;<br />
    OleDbCommand cmd;<br />
    OleDbDataReader rd;<br />
    OleDbDataAdapter da;<br />
    DataSet ds;<br />
    //Directory.CurrentDirectory;<br />
    protected void Page_Load(object sender, EventArgs e)<br />
    {<br />
        //Directory.CreateDirectory(@"~\Upload\");<br />
        con = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + HttpContext.Current.Server.MapPath("App_Data/testdb.mdb"));<br />
        Load_GridData();<br />
    }<br />
<br />
void Load_GridData()<br />
{<br />
con.Open();  //open the connection <br />
OleDbDataAdapter da = new OleDbDataAdapter("select Image_ID, Image_1, Image_2, Image_3 from Images", con);<br />
DataSet ds=new DataSet();<br />
//DataTable table = new DataTable();<br />
da.Fill(ds);   // Fill the dataset <br />
GridView1.DataSource = ds; // give data to gridview<br />
GridView1.DataBind();<br />
    con.Close();<br />
}<br />
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)<br />
{<br />
<br />
}<br />
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)<br />
{<br />
    if (e.Row.RowType == DataControlRowType.DataRow)<br />
    {<br />
        ((Image)e.Row.FindControl("img_1")).ImageUrl = "'@~/Upload/'" ;<br />
        <br />
    }<br />
}<br />
<br />
<br />

Arun Jacob3-Sep-09 20:14

3-Sep-09 20:14

put a breakpoint at

GridView1.DataSource = ds;

and check if ds is filling correctly with data.

swtlibra3-Sep-09 20:25

3-Sep-09 20:25

ok if we use a simple code then how the image will be displayed using code
through code simple data is displaying in the grid

Arun Jacob3-Sep-09 20:28

3-Sep-09 20:28

swtlibra wrote:
if we use a simple code then how the image will be displayed using code

Give the path of the image as relative url and check if that images existing in the solution.
Smile | :)

swtlibra3-Sep-09 20:33

3-Sep-09 20:33

where to give the path
plz tell about the code

Arun Jacob3-Sep-09 20:40

3-Sep-09 20:40

Instead of
((Image)e.Row.FindControl("img_1")).ImageUrl = "'@~/Upload/'" ;

give something like,
((Image)e.Row.FindControl("img_1")).ImageUrl = @"~/Upload/imagename.jpg" ;
where imagename is the path from object source.
Smile | :)

Abhijit Jana3-Sep-09 20:41

Panel Enabled on checking checkbox

3-Sep-09 20:41

swtlibra wrote:
where to give the path

Image path should be the database column . And physically your image storage location would be hard drive.
When you will retrieve the path from database, image will be load from drive.
The Article, which you have mention above, clearly explained each and every steps. Smile | :)

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.

haleemasher3-Sep-09 18:19

haleemasher

3-Sep-09 18:19

want to create a Panel in ASP.NET ) with a check box as a header that disables all contained controls when unchecked. How do i so???

Arun Jacob3-Sep-09 18:26

3-Sep-09 18:26

You can do it either by server side code or client side code.If you want to do it in server side use OnCheckedChanged event of checkbox.
Smile | :)

haleemasher3-Sep-09 18:38

haleemasher

3-Sep-09 18:38

I want to work on client side.

Arun Jacob3-Sep-09 18:40

3-Sep-09 18:40

Add onclick attribute to checkbox and disable controls in the onclick event.

something like,

chkName.Attributes.Add("onclick", "return DisableControls();");

haleemasher3-Sep-09 18:56

haleemasher

3-Sep-09 18:56

i can't find click event for a check box plz send me the code for onchange event

Arun Jacob3-Sep-09 19:11

3-Sep-09 19:11

In the page load event do like this,

if (!IsPostBack)
{
    chkSelect.Attributes.Add("onclick", "Check();");
}

and in html do like this,

   <script type="text/javascript">
     function Check()
     {
        //write your code for Disabling controls
     }
</script>

haleemasher wrote:
plz send me the code

Another thing is if somebody is giving you an idea then plz just try it out first by using online resources or MSDN help and if you feel any difficulties then we'll help if we know that.
Anyway happy to help you.
Big Grin | :-D

Abhijit Jana3-Sep-09 19:34

dropdwon control item is empty when hit submit button.

3-Sep-09 19:34

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.

anish27patel3-Sep-09 17:48

anish27patel

3-Sep-09 17:48

Helo All,

I have defined one usercontrol UserDropdownlist and that UserDropdownlist i have bind in render method as per my requirement (Control render method) and on page when i hit submit one control load event i get item.count = 0 i don't why this happpen event data display on viewstate?

If that issue resolved if i am binding UserDropdownlist list in onload method of control so can you please tell me what is reason for that?

Thanks in Advance,

Anish Patel

Re: dropdwon control item is empty when hit submit button.

Arun Jacob3-Sep-09 18:10

3-Sep-09 18:10

anish27patel wrote:
i have bind in render method

Its better to know the event cycle to solve this problem.
Your problem is because you are binding in Render.So it won't be there in ViewState.As u told use load for binding drop down.
Search MSDN for Event life cycle in ASP.NET.
Smile | :)

multiselect combo box [modified]

haissk3-Sep-09 16:47

haissk

3-Sep-09 16:47

Hi Experts,

I am using a simple text box and a hidden checklist control to get a multiselect text when i click on text box i just display the checklist by javascript methods and now i want to hide th checklist when i lose focus to the text box.
i have implemented onblur event for text box but when i try to click on checklist item the onblur event is fired and the checklist control is getting hidden.

Please help me to resolve this(may be in javascript only)

thanks
Sathish

modified on Friday, September 4, 2009 12:22 AM

Re: multiselect combo box

Arun Jacob3-Sep-09 18:28

3-Sep-09 18:28

I think better to make it as a usercontrol and try to add focus out attribute for the usercontrol.