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How to filter/sort with DataTable

Posted on 2011-03-21
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Last Modified: 2012-05-11
This code lists all names in the gridview. I need to filter/select a specific name "XNAME" and display just this "XNAME" on the gridview... Can u please help me accomplish this?




    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            GridView1.DataSource = GetDataTable(@"c:\fans.csv");
            GridView1.DataBind();
        }
    }


private DataTable GetDataTable(string textFile)
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("Name");
        dt.Columns.Add("Age");
        dt.Columns.Add("State");

        if (File.Exists(textFile))
        {
            using (StreamReader sr = new StreamReader(textFile))
            {
                sr.ReadLine();

                while (!sr.EndOfStream)
                {

                    string value = sr.ReadLine();
   
                    if (!string.IsNullOrEmpty(value))
                    {
                        string[] values = value.Split(new char[] { ';' });

                        if (values.Length > -1)
                        {

                            DataRow row = dt.NewRow();
                            row["Name"] = values[0];
                            row["Age"] = values[1];
                            row["State"] = values[2];
                            dt.Rows.Add(row);
                        }
                    }
                }
            }
        }

        return dt;
    }
0
Comment
Question by:portalvale
4 Comments
 
LVL 13

Expert Comment

by:Rahul Agarwal
ID: 35186216
0
 
LVL 13

Expert Comment

by:gamarrojgq
ID: 35186241
Hi,

You can do it like this method, you just send the name you want to filter
private void FilterDataTable(string strName)
        {
            DataTable dtFilter = new DataTable();
            dtFilter.Columns.Add("Name");
            dtFilter.Columns.Add("Age");
            dtFilter.Columns.Add("State");

            DataRow[] drFiltered;
            DataTable dtActual;

            dtActual = (DataTable)GridView1.DataSource;
            drFiltered = dtActual.Select("Name = '" + strName + "'");
            for (int i = 0; i < drFiltered.Count(); i++)
            {
                dtFilter.ImportRow(drFiltered[i]);
            }

            GridView1.DataSource = dtFilter;
        }

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0
 
LVL 11

Expert Comment

by:SAMIR BHOGAYTA
ID: 35186317
0
 
LVL 11

Accepted Solution

by:
Kusala Wijayasena earned 2000 total points
ID: 35186587
Do like this

GridView1.DataSource = GetDataTable(@"c:\fans.csv").Select("Name = 'XNAME'");
GridView1.DataBind();

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-Kusala
0

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