//gridview点击绑定物料名称表
 private void BindGridView_MatBasicData_Gridview(string iid)
 {
     try
     {
         Guid id = new Guid(iid);
         GridView_MaterialBasicData.DataSource = mat.Select_MaterialBasicDataForGridview(id);
         GridView_MaterialBasicData.DataBind();
     }
     catch (Exception)
     {
         Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('you make some mistakes ');</script>");
     }
 }
    //模糊查询绑定物料名称表
    private void BindGridView_MatBasicData_Serarch(string conditon)
    {
        //conditon = GetCondition();

        try
        {
            GridView_MaterialBasicData.DataSource = mat.Select_MaterialBasicData(conditon);
            GridView_MaterialBasicData.DataBind();
        }
        catch (Exception)
        {
            Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('you make some mistakes ');</script>");
        }
    }
    protected void GridView_MatBasicData_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView theGrid      = sender as GridView; // refer to the GridView
        int      newPageIndex = 0;

        if (-2 == e.NewPageIndex)
        {
            TextBox     txtNewPageIndex = null;
            GridViewRow pagerRow        = GridView_MaterialBasicData.BottomPagerRow;


            if (null != pagerRow)
            {
                txtNewPageIndex = (TextBox)pagerRow.FindControl("textbox");   // refer to the TextBox with the NewPageIndex value
            }

            if (null != txtNewPageIndex && txtNewPageIndex.Text != "")
            {
                newPageIndex = int.Parse(txtNewPageIndex.Text) - 1; // get the NewPageIndex
            }
        }
        else
        {
            newPageIndex = e.NewPageIndex;
        }
        if (Label_BasicData_Source.Text == "Gridview数据源")
        {
            BindGridView_MatBasicData_Gridview(label_mattypeid.Text.ToString());
        }
        if (Label_BasicData_Source.Text == "模糊查询数据源")
        {
            BindGridView_MatBasicData_Serarch(GetCondition());
        }
        newPageIndex = newPageIndex < 0 ? 0 : newPageIndex;
        newPageIndex = newPageIndex >= GridView_MaterialBasicData.PageCount ? GridView_MaterialBasicData.PageCount - 1 : newPageIndex;
        GridView_MaterialBasicData.PageIndex = newPageIndex;
        GridView_MaterialBasicData.DataBind();
    }