Modifying DataBound Hyperlinks Text

Modifying a GridView's Databound Hyperlink text since I couldn't do this easily in the ItemTemplate, I moved the Replace function to the DataBound of the GridView:

    protected void GridViewStocksInLists_DataBound(object sender, EventArgs e)
    {
        int rowId;
        string imgUrl;
        string navUrl;
        for (rowId=0; rowId<GridViewStocksInLists.Rows.Count;rowId++) {
            imgUrl = string.Empty;
            navUrl = string.Empty;
            imgUrl = ((HyperLink)GridViewStocksInLists.Rows[rowId].FindControl("hlChart")).ImageUrl.Replace('$', '^');
            ((HyperLink)GridViewStocksInLists.Rows[rowId].FindControl("hlChart")).ImageUrl = imgUrl;
            navUrl = ((HyperLink)GridViewStocksInLists.Rows[rowId].FindControl("hlChart")).NavigateUrl.Replace('$', '^');
            ((HyperLink)GridViewStocksInLists.Rows[rowId].FindControl("hlChart")).NavigateUrl = navUrl;
        }
    }

This replaced $ with ^ in my HyperLink.

Here is the GridView that contains the HyperLink:

<asp:GridView ID="GridViewStocksInLists" runat="server" DataSourceID="SqlDataSourceGetStocksInList">
                    <RowStyle CssClass="tableAnalysisRow" />
                    <HeaderStyle CssClass="tableAnalysisHeader" />
                    <AlternatingRowStyle CssClass="tableAnalysisAlternatingRow" />
                    <Columns>                  
                        <asp:TemplateField HeaderText="Chart">
                            <ItemTemplate>
                                <asp:HyperLink ID="hlChart" runat="server"
                                ImageUrl='<%# Eval("Symbol", "http://chart.finance.yahoo.com/c/0b/d/{0}").ToLower() %>'
                                NavigateUrl='<%# Eval("Symbol", "http://finance.yahoo.com/q/bc?s={0}&t=1y").ToLower() %>' >
                                </asp:HyperLink>
                            </ItemTemplate>
                        </asp:TemplateField>
                    </Columns>
                </asp:GridView>

References: http://forums.asp.net/p/1263726/2542303.aspx#2542303

Remove HTML Tags

Remove HTML Tags from a string:

    public static string RemoveHtml(string txt)  
    {  
        return Regex.Replace(txt, @"<[^>]*>", string.Empty);  
    } 

Reference: http://www.webpronews.com/expertarticles/2006/12/01/aspnet-remove-html-tags-from-a-string

Resetting a StringBuilder

Here is how to reset a StringBuilder:

myStringBuilder.Length = 0;

myStringBuilder.Remove(0, myStringBuilder.Length) also works, but why bother with that one?
References: http://forums.asp.net/t/1193708.aspx

C# string is null or empty

Here's another shortcut method to make sure the string is not null and not empty. What I find interesting is that using myString.length>0 is supposedly more efficient than myString != string.empty.

        if (!String.IsNullOrEmpty(myString))
        {
            myString = "myString != null && myString != string.Empty";
        }

C# string extract tag method

This extracts a tagged string. For example, string findTagValue = extractTag ("Foo", "", ""); This would fetch Foo.

    private string extractTag(string original, string beginTag, string endTag)
    {
        string retVal = string.Empty;
        int begin = original.IndexOf(beginTag);
        int end = -1;
        if (begin > 0)
        {
            end = original.IndexOf(endTag, begin);
        }
        if ((begin > 0))
        {
            if ((end > begin))
            {
                retVal = original.Substring((begin+beginTag.Length), (end - begin-endTag.Length));
            }
        }
        return retVal;
    }