如何在gridview中显示前100个字符？

Question

I use a gridview to display data, but sometimes the data is to big to be displayed in a cell. Can I use a method to allow the gridview to display fe the first 100 characters of a string?

any help is welcome!

Answer 1

You can handle the RowDataBound event of the gridview and cut the text length, like so:

protected void gvNotes_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowIndex < 0)
        return;

    int _myColumnIndex = 0;   // Substitute your value here

    string text = e.Row.Cells[_myColumnIndex].Text;

    if (text.Length > 100)
    {
        e.Row.Cells[_myColumnIndex].Text = text.Substring(0, 100);
    }
}

Answer 2

Create this function

public object TrimString(string input, int length)
    {
        // return nothing if the string is null
        if (String.IsNullOrEmpty(input))
        {
            return string.Empty;
        }

        // invalid length submitted
        if (length <= 0)
        {
            length = 100;
        }

        if (input.Length > length)
        {
            return input.Substring(0, length) + "...";
        }

        return input;
    }

And you call it from your aspx page like this.

<ItemTemplate>
        <asp:Label ID="Label4" runat="server" Text='<%# TrimString(Eval("CustName").ToString(),100) %>'></asp:Label>
</ItemTemplate>

Answer 3

For an IE only answer, you could use CSS and, as long as you have a set width for the column, set overflow:ellipsis, or overflow:hidden (should work for all browsers), if you don't want the dots.

---

OK, as per the comment, I haven't used gridviews for a while, but it would be a matter of setting a CSS class for each of those cells and in the class:

trimText
{
   overflow:ellipsis;
}

There's also some hacking you can do to get this to display cross browser - some notes here:

http://www.jide.fr/english/emulate-text-overflowellipsis-in-firefox-with-css