過濾數據視圖結果並將值綁定到具有分頁的網格

Question

我有一個分頁的網格視圖。 將數據綁定到網格視圖后，我將根據下拉列表的選擇對網格進行過濾。 結果是2頁。 但是，當我單擊第二頁時，網格正在刷新原始結果。 這是我的代碼：

DataTable dtSyncQueueTransfer = syncStatusBizManager.GetSyncTransferResult(syncRequestId, serverIds, statusIds, txtFileName.Value);
ViewState["SyncResults"] = dtSyncQueueTransfer;
gvSyncQueueList.DataSource = dtSyncQueueTransfer;
gvSyncQueueList.DataBind();

protected void ddlProjectId_SelectedIndexChanged(object sender, EventArgs e)
{
    DataTable dtSyncResults = (DataTable)ViewState["SyncResults"];
    //To display all the sync results when the dropdown selected value is All.
    if (ddlProjectId.SelectedValue.ToString().Equals("All"))
    {
        gvSyncQueueList.DataSource = dtSyncResults;
        gvSyncQueueList.DataBind();
    }
    //To display the sync results when the user selects a projectId from the drop down.
    else
    {
        DataView viewResults = new DataView(dtSyncResults);
        //Filtering sync results based on projectid.
        viewResults.RowFilter = "ProjectId =" + Convert.ToInt32(ddlProjectId.SelectedValue);
        gvSyncQueueList.DataSource = viewResults;
        gvSyncQueueList.DataBind();
    }
}

protected void gvSyncQueueList_OnPageIndexChanging(object sender, GridViewPageEventArgs e)
{
    gvSyncQueueList.PageIndex = e.NewPageIndex;
    gvSyncQueueList.DataSource = (DataTable)ViewState["SyncResults"];
    gvSyncQueueList.DataBind();
    string activetab = GetActiveTab();
    ShowTabs(activetab);
}

有人可以幫忙嗎？

Answer 1

這是我的問題的解決方案。 我們需要在分頁時重新過濾結果。 在更改網格頁面時，我們需要更改代碼，如下所示：

protected void gvSyncQueueList_OnPageIndexChanging(object sender, GridViewPageEventArgs e)
{
    gvSyncQueueList.PageIndex = e.NewPageIndex;
    //To view all the sync results when the page first time loads or when the drop down value is all.
    if (ddlProjectId.SelectedValue.ToString().Equals("All") || string.IsNullOrEmpty(ddlProjectId.SelectedValue.ToString()))
        gvSyncQueueList.DataSource = (DataTable)ViewState["SyncResults"];
    //To bind the project results according to drop down value selected in paging.
    else
    {
        DataView viewResults = new DataView((DataTable)ViewState["SyncResults"]);
        viewResults.RowFilter = "ProjectId =" + Convert.ToInt32(ddlProjectId.SelectedValue);
        gvSyncQueueList.DataSource = viewResults;
    }
    gvSyncQueueList.DataBind();
    string activetab = GetActiveTab();
    ShowTabs(activetab);
}