GridView动态添加新行

< asp:GridView ID = " gvFrontendTypeSetting "  runat = " server "  AutoGenerateColumns = " false "
CssClass = " table "  OnRowDeleting = " gvFrontendTypeSetting_RowDeleting " >
< Columns >
< asp:TemplateField HeaderText = " 序号 " >
< ItemTemplate >
< div align = " center " >
< asp:TextBox ID = " txtSerialNumber "  runat = " server "  Width = " 20px "  Text = ' <%#Eval("serialNumber")%> '
BorderStyle = " None " ></ asp:TextBox >
</ div >
</ ItemTemplate >
</ asp:TemplateField >
< asp:TemplateField HeaderText = " 商品筛选类型 " >
< ItemTemplate >
< asp:TextBox ID = " txtType "  runat = " server "  Text = ' <%#Eval("type")%> '  BorderStyle = " None " ></ asp:TextBox >
</ ItemTemplate >
< ItemStyle Width = " 100px "   />
</ asp:TemplateField >
< asp:TemplateField HeaderText = " 修改时间 " >
< ItemTemplate >
< div align = " center " >
< asp:Label runat = " server "  ID = " lblModificationTime "  Text = ' <%#Eval("modifiedTime")%> '
BorderStyle = " None " ></ asp:Label >
</ div >
</ ItemTemplate >
</ asp:TemplateField >
< asp:TemplateField HeaderText = " 修改人 " >
< ItemTemplate >
< div align = " center " >
< asp:Label runat = " server "  ID = " lblModificationName "  Text = ' <%#Eval("modifiedName")%> '
BorderStyle = " None " ></ asp:Label >
</ div >
</ ItemTemplate >
</ asp:TemplateField >
< asp:TemplateField HeaderText = " 操作 " >
< ItemTemplate >
< div align = " center " >
< asp:Button ID = " btnDel "  runat = " server "  Text = " 删除 "  CommandName = " delete "   />
< asp:Button ID = " btnEdit "  runat = " server "  Text = " 修改 "  CommandName = " Edit "   />
</ div >
</ ItemTemplate >
</ asp:TemplateField >
</ Columns >
</ asp:GridView >

///   <summary>
///  Init the gvFrontendTypeSetting to show
///   </summary>
private   void  InitGVFrontendTypeSetting()
{
// Create a datatable instance
DataTable tbScratchCard  =   new  DataTable();
// column one
DataColumn colSerialNumber  =   new  DataColumn();
colSerialNumber.DataType  =  System.Type.GetType( " System.Int32 " );
colSerialNumber.ColumnName  =   " serialNumber " ;
// column two
DataColumn colType  =   new  DataColumn();
colType.DataType  =  System.Type.GetType( " System.String " );
colType.ColumnName  =   " type " ;
// column three
DataColumn colModifiedTime  =   new  DataColumn();
colModifiedTime.DataType  =  System.Type.GetType( " System.DateTime " );
colModifiedTime.ColumnName  =   " modifiedTime " ;
// column four
DataColumn colModifiedName  =   new  DataColumn();
colModifiedName.DataType  =  System.Type.GetType( " System.String " );
colModifiedName.ColumnName  =   " modifiedName " ;

// DataColumnCollection
DataColumn[] cols  =  { colSerialNumber, colType, colModifiedTime, colModifiedName };
// Add columns to the table tbScratchCard
tbScratchCard.Columns.AddRange(cols);
// Add a new row to the table tbScratchCard
tbScratchCard.Rows.Add(tbScratchCard.NewRow());
tbScratchCard.Rows[ 0 ][ " serialNumber " ]  =  tbScratchCard.Rows.Count  -   1 ;
tbScratchCard.Rows[ 0 ][ " modifiedTime " ]  =  DateTime.Now;
tbScratchCard.Rows[ 0 ][ " modifiedName " ]  =  ((User)Session[ " user " ]).AccountName;
ViewState[ " tbCategory " ]  =  tbScratchCard;
// Bind the table to the gridview
gvFrontendTypeSetting.DataSource  =  tbScratchCard;
gvFrontendTypeSetting.DataBind();
}

///   <summary>
///  添加行
///   </summary>
///   <param name="sender"></param>
///   <param name="e"></param>
protected   void  btnAddType_Click( object  sender, EventArgs e)
{
DataTable tbCategory  =  (DataTable)ViewState[ " tbCategory " ];
for  ( int  i  =   0 ; i  <=  tbCategory.Rows.Count  -   1 ; i ++ )
{
tbCategory.Rows[i][ " serialNumber " ]  =  Convert.ToInt32(((TextBox)gvFrontendTypeSetting.Rows[i].Cells[ 0 ].FindControl( " txtSerialNumber " )).Text);
tbCategory.Rows[i][ " type " ]  =  ((TextBox)gvFrontendTypeSetting.Rows[i].Cells[ 0 ].FindControl( " txtType " )).Text;
tbCategory.Rows[i][ " modifiedTime " ]  =  ((Label)gvFrontendTypeSetting.Rows[i].Cells[ 0 ].FindControl( " lblModificationTime " )).Text;
tbCategory.Rows[i][ " modifiedName " ]  =  ((Label)gvFrontendTypeSetting.Rows[i].Cells[ 0 ].FindControl( " lblModificationName " )).Text;
}
// Add new row
tbCategory.Rows.Add(tbCategory.NewRow());
tbCategory.Rows[tbCategory.Rows.Count  -   1 ][ " serialNumber " ]  =  tbCategory.Rows.Count  -   1 ;
tbCategory.Rows[tbCategory.Rows.Count  -   1 ][ " modifiedTime " ]  =  DateTime.Now;
tbCategory.Rows[tbCategory.Rows.Count  -   1 ][ " modifiedName " ]  =  ((User)Session[ " user " ]).AccountName;
ViewState[ " tbCategory " ]  =  tbCategory;
// Bind the table to the gridview
gvFrontendTypeSetting.DataSource  =  tbCategory;
gvFrontendTypeSetting.DataBind();
}

///   <summary>
///  删除
///   </summary>
///   <param name="sender"></param>
///   <param name="e"></param>
protected   void  gvFrontendTypeSetting_RowDeleting( object  sender, GridViewDeleteEventArgs e)
{

int  number  = Convert.ToInt32(((TextBox)gvFrontendTypeSetting.Rows[e.RowIndex].FindControl( " txtSerialNumber " )).Text);
DataTable tbCategory  =  (DataTable)ViewState[ " tbCategory " ];
for  ( int  i  =   0 ; i  <=  tbCategory.Rows.Count  -   1 ; i ++ )
{
if  (Convert.ToInt32(tbCategory.Rows[i][ " serialNumber " ]) == number)
{
tbCategory.Rows.RemoveAt(i);
}
}
ViewState[ " tbCategory " ]  =  tbCategory;
gvFrontendTypeSetting.DataSource  =  tbCategory;
gvFrontendTypeSetting.DataBind();
}