Gridview的中数据的截取

 1  protected void Page_Load(object sender, EventArgs e)
 2     {
 3         if (!IsPostBack)
 4         {
 5             databind();
 6         }
 7 
 8     }
 9     public void databind()
10     {
11         SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["Conn"].ToString());
12         SqlCommand cmd = new SqlCommand();
13         cmd.Connection = con;
14         cmd.CommandText = "Select * From Customers";
15         SqlDataAdapter da = new SqlDataAdapter(cmd);
16         DataSet ds = new DataSet();
17         da.Fill(ds);
18         this.GridView1.DataSource = ds.Tables[0];
19         this.GridView1.DataKeyNames = new string[] { "CustomerID" };
20         this.GridView1.DataBind();
21     }
22     protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
23     {
24         if (e.Row.RowType == DataControlRowType.DataRow)
25         {
26             e.Row.Cells[1].Text = SubstringStr(e.Row.Cells[1].Text, 5);
27         }
28     }
29     public string SubstringStr(string str, int len)
30     {
31         if (str.Length <= len)
32         {
33             return str; 
34         }
35         else
36         {
37             return str.Substring(0, len) + "...";
38         }
39     }