Question 88260 in ASP.NET Question posted in
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ASP.NET databound string column format

in my web application I have a gridview where I have data from a database. It looks like this:

number place
1234579 home2
1787543 home1

And i want edit fist column (number) to format – fifth character from right side bold and three characters from right side also bold.

number place
1234579 home2
1787543 home1

How can I achieve this? I work in a visual studio, it can be set in design mode or in the source, or how. Thanks

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2

Answers


  1. 0

    You can use the TemplateField to move the data to code behind and format there as you wish – because here you have to split your number and then reformat it.

    So inside the GridView add a <asp:TemplateField>

    <Columns>
    <asp:TemplateField HeaderText="number" >
        <ItemTemplate>
            <%#RenderLine(Container.DataItem)%>
        </ItemTemplate>
    </asp:TemplateField>
</Columns>

    and on code behind do your format..

    protected string RenderLine(object oItem)
{        
    var yourNumber = DataBinder.Eval(oItem, "fieldname").ToString();

     // split yourNumber, then reformat it using <b> etc... and return it
     // need to do some work here, here is an example
     var newNumberFormat = string.Format("<b>{0}</b>", yourNumber);

     return newNumberFormat;
}
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  2. 0

    Well it is assumed the source is some kind of database, so bottom line is you have to pull that data and format it with code.

    I mean, trivial to make the WHOLE column bold. But this is a bit of whack job of a request here.

    Ok, so we have say this data in a table:

    enter image description here

    And our markup would be this:

     <asp:GridView ID="GridView1" runat="server" CssClass="table"></asp:GridView>

    Ok, our code to load the grid is this:

        void LoadGrid()
    {
        using (SqlConnection conn = new SqlConnection(Properties.Settings.Default.TEST4))
        {
            using (SqlCommand cmdSQL = new SqlCommand("SELECT SNumber, Place from tblJunk", conn))
            {
                conn.Open();
                GridView1.DataSource = cmdSQL.ExecuteReader();
                GridView1.DataBind();
            }
        }
    }

    and we now have this:

    enter image description here

    Now, as a "general" rule, formatting grids/listview etc, we can try and inject message server expressions into the markup, but for setting color, highlights, and formatting it better to use the databound event of that control.

    So, we could have this code:

       protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            string txt = e.Row.Cells[0].Text;

            // bold 5th from right
            int rPos = txt.Length - 4;
            txt = MyBold(txt, rPos, 1);

            // bol last 3 chars
            rPos = txt.Length - 2;
            txt = MyBold(txt, rPos, 3);
            e.Row.Cells[0].Text = txt;
        }
    }

    And now our output is this:

    enter image description here

    So, for changing status and formatting the grid (say a color for status etc.), then the above is the general appoarch.

    Of course we need some function called MyBold.

    Say like this:

       string MyBold(string s,int iStart, int iEnd)
    {
        // ONE based postions - NOT 0 based!
        iStart -= 1;

        s = rLeft(s, iStart) + "<strong>" + s.Substring(iStart, iEnd) + "</strong>" +
            s.Substring(iStart + iEnd, s.Length - (iStart + iEnd));
        return s;
    }

    string rLeft(string s,int r)
    {
        return s.Substring(0, r);
    }
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