ソートする機能を持つ2つの列を持つGridViewがあります。ソートした後、AscとDescソートのためにArrowを上下に指している列の横にイメージを表示したい。Reference ImageButton in asp.net
ImageButtonオブジェクトを参照する方法がわからないので、ImageButton.ImageUrlを、そのAscとDescの値に基づいて実際のイメージに設定できます。ここで
私の.aspxコードです:
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:LinkButton ID="Name_SortLnkBtn" runat="server" Text="Name:" ToolTip="Click to Sort Column" CommandName="Sort" CommandArgument="Name" CausesValidation="false" />
<asp:ImageButton ID="Name_SortImgBtn" runat="server" Visible="false" ToolTip="Click to Sort Column" CommandName="Sort" CommandArgument="Name" CausesValidation="false" />
</HeaderTemplate>
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%# "~/TestResults/Diabetes.aspx?ID="+Eval("ID") %>'><%#Eval("Name")%></asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
<asp:LinkButton ID="HouseName_SortLnkBtn" runat="server" Text="House Name:" ToolTip="Click to Sort Column" CommandName="Sort" CommandArgument="House" CausesValidation="false" />
<asp:ImageButton ID="HouseName_SortImgBtn" runat="server" Visible="false" ToolTip="Click to Sort Column" CommandName="Sort" CommandArgument="House" CausesValidation="false" />
</HeaderTemplate>
<ItemTemplate><%#Eval("House")%></ItemTemplate>
</asp:TemplateField>
</Columns>
ヘルプは素晴らしいいただければ幸いです。
更新.aspx.csファイル:
public partial class Home : System.Web.UI.Page
{
protected _code.SearchSelection _SearchSelection = new _code.SearchSelection();
protected _code.Utils _utils = new _code.Utils();
protected ImageButton sortImage = new ImageButton();
protected void Page_Load(object sender, EventArgs e) {
//if (!IsPostBack) {
Master.FindControl("Home").ID = "active";
GridView1_DataBind();
//Guid ID = new Guid(_SearchSelection.getUserID().Tables[0].Rows[0]["u_ID"].ToString());
//}
}
protected void GridView1_DataBind() {
string selection = string.Empty;
TreeView treeMain = (TreeView)tree.FindControl("treeMain");
if (treeMain.SelectedNode != null)
selection = treeMain.SelectedNode.Text;
else
selection = Session["Selection"].ToString();
DataSet mainData = _utils.getStoreProcedure(new SqlParameter[] { new SqlParameter("@Selection", selection) }, "sp_getTenantsWithDiabetes", ConfigurationManager.ConnectionStrings["TIPS4"].ConnectionString);
Session["MainData"] = mainData.Tables[0];
GridView1.DataSource = mainData.Tables[0];
GridView1.DataBind();
}
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e) {
//Retrieve the table from the session object.
DataTable dt = Session["MainData"] as DataTable;
ImageButton imageButton = new ImageButton();
if (dt != null) {
//Sort the data.
dt.DefaultView.Sort = e.SortExpression + " " + GetSortDirection(e.SortExpression);
//imageButton.ImageUrl = "~/App_Themes/Sugar2006/Images/arrow_up.gif";
//imageButton.Visible = true;
this.GridView1.DataSource = Session["MainData"];
this.GridView1.DataBind();
}
}
private string GetSortDirection(string column) {
// By default, set the sort direction to ascending.
string sortDirection = "ASC";
// Retrieve the last column that was sorted.
string sortExpression = ViewState["SortExpression"] as string;
if (sortExpression != null) {
// Check if the same column is being sorted.
// Otherwise, the default value can be returned.
if (sortExpression == column) {
string lastDirection = ViewState["SortDirection"] as string;
if ((lastDirection != null) && (lastDirection == "ASC")) {
sortDirection = "DESC";
}
}
}
// Save new values in ViewState.
ViewState["SortDirection"] = sortDirection;
ViewState["SortExpression"] = column;
return sortDirection;
}
protected void gridView1_RowDataBound(object sender, GridViewRowEventArgs e) {
if (e.Row.RowType == DataControlRowType.Header) {
var imageButton = (ImageButton)e.Row.FindControl("Name_SortImgBtn");
sortImage = imageButton;
//imageButton.ImageUrl = "~/App_Themes/Sugar2006/Images/arrow_up.gif";
//imageButton.Visible = true;
}
}
これをチェックしてください:http://stackoverflow.com/questions/7188689/change-sorting-image-button-in-gridview –
お返事ありがとうございます。あなたが提供したリンクを見ると、誰かが実際の画像をクリックしてソートしますが、私の画像は表示されないので、Clickイベントに送信することはできません。 –