c#数据绑定之将datatabel的data添加listView

功能：通过响应ui textbox 的值向listview 绑定新添加的纪录。

ui xaml 代码

<grid margin="5">
            <grid.columndefinitions>
                <columndefinition width="auto"/>
                <columndefinition/>
            </grid.columndefinitions>
            <grid.rowdefinitions>
                <rowdefinition  height="auto"/>
                <rowdefinition height="auto"/>
                <rowdefinition height="auto"/>
                <rowdefinition height="auto"/>
                <rowdefinition height="auto"/>
                <rowdefinition height="auto"/>
                <rowdefinition/>
            </grid.rowdefinitions>
            <textblock  grid.row="0" grid.column="0" text="商品名称" horizontalalignment="right" verticalalignment="center" />
            <textbox grid.row="0" grid.column="1" margin="2" verticalalignment="center" text="{binding path=comname}" name="tbkname"/>
            <textblock  grid.row="1" grid.column="0" text="商品进货单价" horizontalalignment="right" verticalalignment="center" />
            <textbox grid.row="1" grid.column="1" margin="2" verticalalignment="center" text="{binding path=cominprice}" name="tbkinprice"/>
            <textblock  grid.row="2" grid.column="0" text="商品零售价格" horizontalalignment="right" verticalalignment="center" />
            <textbox grid.row="2" grid.column="1" margin="2" verticalalignment="center" text="{binding path=comoutprice}" name="tbkoutprice"/>
            <textblock  grid.row="3" grid.column="0" text="进货数量" horizontalalignment="right" verticalalignment="center" />
            <textbox grid.row="3" grid.column="1" margin="2" verticalalignment="center" text="{binding path=comoutprice}" name="tbkcomcount"/>

            <button grid.row="4" grid.column="1" content="添加新纪录" margin="2" padding="2" name="btnadd" click="btnadd_click" />

            <textblock grid.row="5" grid.columnspan="2"  horizontalalignment="stretch"  verticalalignment="center"  background="black" />

            <listview name="lstdisplay" itemssource="{binding}" grid.row="6" grid.columnspan="2">
                <listview.view>
                    <gridview>
                        <gridview.columns>
                            <gridviewcolumn  header="autoid" displaymemberbinding="{binding autoid}"/>
                            <gridviewcolumn header="商品名称" displaymemberbinding="{binding comname}"/>
                            <gridviewcolumn header="进货价格" displaymemberbinding="{binding path=cominprice,stringformat={}{0:c}}"/>
                            <gridviewcolumn header="零售价格" displaymemberbinding="{binding path=comoutprice,stringformat={}{0:c}}"/>
                            <gridviewcolumn header="进货数量" displaymemberbinding="{binding comcount}"/>
                        </gridview.columns>
                    </gridview>
                </listview.view>
            </listview>
        </grid>

c#后代码

datatable commodity = newtable();

        public mainwindow()
        {
            initializecomponent();
            //datatable commodity = newtable();

        }

      

        private void btnadd_click(object sender, routedeventargs e)
        {

            addnewmember(commodity);
            lstdisplay.datacontext = commodity;

        }

        private void btndelete_click(object sender, routedeventargs e)
        {
            button b = sender as button;
            int32 autoid = convert.toint32(b.commandparameter);
            delmember(commodity, autoid);
            lstdisplay.datacontext = commodity;
            lstdisplay.items.refresh();

        }

        private datatable delmember(datatable table,int32 laction)
        {
            //deleting  a existed row in datatable commodity;
            datarow delrow = table.rows.find(laction);
            table.rows.remove(delrow);
            return table;
        }

        private  datatable addnewmember(datatable table)
        {
           

            //inserting a new row in datatable commodity;

            datarow newrow = table.newrow();
            newrow["comname"] = tbkname.text;
            newrow["cominprice"] = tbkinprice.text;
            newrow["comoutprice"] = tbkoutprice.text;
            newrow["comcount"] = tbkcomcount.text;
            table.rows.add(newrow);
            return table;
        }

 

        private static datatable newtable()
        {
            //create a new table named commodity
            datatable commodity = new datatable("commodity");

            //instert new columns
            datacolumn auto = new datacolumn("autoid", typeof(int32));
            //setting the column auto increment
            auto.autoincrement = true;
            commodity.columns.add(auto);
            commodity.columns.add("comname", typeof(string));
            commodity.columns.add("cominprice", typeof(double));
            commodity.columns.add("comoutprice", typeof(double));
            commodity.columns.add("comcount", typeof(system.int32));
            commodity.primarykey = new datacolumn[] { commodity.columns[0] };
            return commodity;
        }