Question

我是asp.net中的新手。在一个面板控件中创建了一个动态网格视图。当用户选择一个下拉列表值并单击一个按钮时，这个gridview与datatable绑定并正确显示值。但我想显示选择动态gridview只更改下拉列表。不需要单击按钮。当我尝试这样做时，它没有显示gridview.its绑定值，但它没有显示。

HTML：

<div id="divdgvUpdate" style="display: none; width: 100%; height: 300px; overflow: scroll">
    <asp:panel id="pnlupdate" runat="server">
        <asp:DropDownList ID="ddlProcess"   runat="server" AutoPostBack="true" onselectedindexchanged="ddlProcess_SelectedIndexChanged" CssClass="select2-chosen"></asp:DropDownList> 
    </asp:panel>
</div>

C＃代码：

public void dynamicgridview()
{
    GridView grdv = new GridView();
    grdv.AutoGenerateColumns = false;
    DataSet ds = new DataSet();
    DataTable dt = new DataTable();
    BL.ESSBL bl = new BL.ESSBL();
    ds = GetEssDetails();//getting datatable
    if (ds != null &&ds.Tables.Count>0 && ds.Tables[0].Rows.Count > 0)
    {
        dt = ds.Tables[0];
        grdv.RowDataBound += new GridViewRowEventHandler(grdv_RowDataBound);                
        grdv.DataSource = null;
        grdv.DataBind();
        grdv.Columns.Clear();

        for (int i = 0; i < dt.Columns.Count; i++)
        {
            BoundField boundfield = new BoundField();
            boundfield.DataField = dt.Columns[i].ColumnName.ToString();
            boundfield.HeaderText = dt.Columns[i].ColumnName.ToString();
            grdv.Columns.Add(boundfield);

        }
        TemplateField tmf = new TemplateField();
        grdv.Columns.Add(tmf);
        tmf = new TemplateField();
        grdv.Columns.Add(tmf);              
        grdv.DataSource = dt;
        grdv.DataBind();
        grdv.Width = 600;
        grdv.CellPadding = 10;
        grdv.CellSpacing = 2;
        grdv.Attributes["class"] = "Shorter";
        pnlupdate.Controls.Add(grdv);

    }
}

protected void btnGO_Click(object sender, EventArgs e)//its working
{
    ddlprocessid = Convert.ToInt32(Session["ddlprocessid"]);
    dynamicgridview();
}

protected void ddlProcess_SelectedIndexChanged(object sender, EventArgs e)//not   working
{
    dynamicgridview(); 
    Clear();
}

按钮点击它正常工作。但是下拉选项改变了它不工作。我想刷新面板或什么？。请帮助我。

面板控件中的动态GridView在asp.net中无法正常刷新

0 个答案: