I have a grid view which I populated with images from a folder. I am trying to delete the image by getting their path name but it always returns me null:
Here are my codes to populate the grid view with images:
protected void GetImage()
{
string path = HttpContext.Current.Request.PhysicalApplicationPath + @"Story/Food Fit For A King";
string[] files = System.IO.Directory.GetFiles(path, "*.jpg");
IList<ImageFileInfo> imageFileList = new List<ImageFileInfo>();
foreach (string strFileName in files)
{
// Change the Absolute path to relative path of File Name and add to the List
imageFileList.Add(new ImageFileInfo { FileName = ResolveUrl(strFileName.Replace(Server.MapPath("/"), "~/")) });
}
gvStory.DataSource = imageFileList;
gvStory.DataBind();
}
And below is my code to delete :
protected void gvStory_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
GridView gvQuestion = (GridView)sender;
int row = e.RowIndex;
// Extract Values.
// string imageName = (TextBox)gvStory.Rows[row].Cells[0].FindControl("TextBox1");// RETURNS NULL
Image img = (Image)gvStory.Rows[row].Cells[0].FindControl("Image1");
string url = img.ImageUrl;
// string fileName = Path.GetFullPath(url); // RETURNS NULL
//string fileName = Path.Combine(Server.MapPath(@"Story/Food Fit For A King"), imageName);
File.Delete(fileName);
GetImage();
}
Am I doing the correct way to the the filepath of the image? But I need the full path of the image to delete it, I tried to use Path.GetFullPath(url) , it doesn't work. Need help on this.
And heres the aspx html side:
<asp:TemplateField HeaderText="Images">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Eval("FileName") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Image ID="Image1" runat="server" ImageUrl='<%# Eval("FileName") %>' Width="240" Height="160" />
</ItemTemplate>
</asp:TemplateField>
Need help on this.
If gridview row will be in edit mode, then only you can find the control that are inside <EditItemTemplate>
tag. in editmode, you will get rowindex as -1. in other mode, rowindex will be greater than -1, then you can find controls that are inside <ItemTemplate>
tag. Otherwise you will get null values. So, you can try this way,
protected void gvStory_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
GridView gvQuestion = (GridView)sender;
int row = e.RowIndex;
string fileName ="";
if(row==-1)
{
string imageName = (TextBox)gvStory.Rows[row].Cells[0].FindControl("TextBox1");
fileName = Path.Combine(Server.MapPath(@"Story/Food Fit For A King"),imageName);
}
else
{
Image img = (Image)gvStory.Rows[row].Cells[0].FindControl("Image1");
string url = img.ImageUrl;
fileName = Path.GetFullPath(url);
}
File.Delete(fileName);
GetImage();
}
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