我想在网格视图中排序功能,但它不工作。可以帮助一些身体帮助?在gridview中排序不工作
代码:
private string ConvertSortDirectionToSql(SortDirection sortDirection)
{
string newSortDirection = String.Empty;
switch (sortDirection)
{
case SortDirection.Ascending:
newSortDirection = "ASC";
break;
case SortDirection.Descending:
newSortDirection = "DESC";
break;
}
return newSortDirection;
}
protected DataSet FillDataSet()
{
string source = "Database=GridTest;Server=Localhost;Trusted_Connection=yes";
con = new SqlConnection(source);
cmd = new SqlCommand("proc_mygrid", con);
ds = new DataSet();
da = new SqlDataAdapter(cmd);
da.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
return ds;
}
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
{
DataTable dt = GridView1.DataSource as DataTable;
if (dt != null)
{
DataView dv = new DataView(dt);
dv.Sort = e.SortExpression + " " + ConvertSortDirectionToSql(e.SortDirection);
GridView1.DataSource = dv;
GridView1.DataBind();
}
这里DT即将null.why?请帮助感谢。
编辑:
enter code here <asp:GridView ID="GridView1" runat="server" CellPadding="4" ForeColor="#333333"
GridLines="None" AllowPaging="true" AllowSorting="true" PageSize="12"
onpageindexchanging="GridView1_PageIndexChanging"
onsorting="GridView1_Sorting">
EDIT(总码)
public partial class _Default : System.Web.UI.Page
{
SqlConnection con;
SqlCommand cmd;
DataSet ds;
SqlDataAdapter da;
protected void Page_Load(object sender, EventArgs e)
{
}
private string ConvertSortDirectionToSql(SortDirection sortDirection)
{
string newSortDirection = String.Empty;
switch (sortDirection)
{
case SortDirection.Ascending:
newSortDirection = "ASC";
break;
case SortDirection.Descending:
newSortDirection = "DESC";
break;
}
return newSortDirection;
}
protected DataSet FillDataSet()
{
string source = "Database=GridTest;Server=Localhost;Trusted_Connection=yes";
con = new SqlConnection(source);
cmd = new SqlCommand("proc_mygrid", con);
ds = new DataSet();
da = new SqlDataAdapter(cmd);
da.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
return ds;
}
protected void GetValues(object sender, EventArgs e)
{
FillDataSet();
}
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
int newPagenumber = e.NewPageIndex;
GridView1.PageIndex = newPagenumber;
GridView1.DataSource = FillDataSet();
GridView1.DataBind();
}
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
{
DataSet ds = FillDataSet();
DataTable dt = ds.Tables[0];
if (dt != null)
{
dt.DefaultView.Sort = e.SortExpression + " " + ConvertSortDirectionToSql(e.SortDirection);
GridView1.DataSource = dt;
GridView1.DataBind();
}
你能否提供一些解决问题和你的代码?你的代码对某些人来说可能看起来很明显,但目前对我来说也可能不是这样。 – 2014-01-06 10:36:19