.net中使用DatagridView的增删改方法

核心提示：<br /> </div></form></body></html>default.aspx.cs页面代码：using System;using System.Web.UI;using System.Web.UI.WebControls;using GP

<br />
</div>
</form>
</body>
</html>
default.aspx.cs页面代码：
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using GPS_Web.ywpages.DAL;
using System.Data;
namespace GPS_Web
{
/// <summary>
/// </summary>
public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
GridViewBind();
}
}
private void GridViewBind()
{
string sql = "select Num,TableName,TextName from dbo.GroupType_Demo";
try
{ //绑定数据源
GridView1.DataSource = SqlHelper.ExecuteDataset(SqlHelper.GetConnSting(), CommandType.Text, sql).Tables[0];
GridView1.DataBind();
}
catch (Exception ex){}
}
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
GridViewBind();
}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
GridViewBind();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{ //gridview编辑项索引等于单击行的索引
GridView1.EditIndex = e.NewEditIndex;
GridViewBind();
}
/// <summary>
/// 修改事件
/// </summary>
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{ //取出编号
int Num = Convert.ToInt32(((Label)GridView1.Rows[e.RowIndex].FindControl("lblNum")).Text.ToString());
//获取修改的值的内容
string TableName = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtTableName")).Text;
string TextName = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtTextName")).Text;
//更新记录
string sql = string.Format("update dbo.GroupType_Demo set TableName='{0}',TextName='{1}' where Num={2}",TableName,TextName,Num);
try
{
int i = SqlHelper.ExecuteNonQuery(SqlHelper.GetConnSting(), CommandType.Text, sql);
if (i > 0)
{
ClientScript.RegisterStartupScript(ClientScript.GetType(), "myscript", "<script language='javascript'>alert('修改成功！')</script>");
}
else
{
ClientScript.RegisterStartupScript(ClientScript.GetType(), "myscript", "<script language='javascript'>alert('修改失败！')</script>");
}
}
catch (Exception ex)
{
ClientScript.RegisterStartupScript(ClientScript.GetType(), "myscript", "<script language='javascript'>alert('操作无效！')</script>");
}
GridView1.EditIndex = -1;
GridViewBind();
}
/// <summary>
/// 删除事件
/// </summary>
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
//取出编号
int Num = Convert.ToInt32(((Label)GridView1.Rows[e.RowIndex].FindControl("lblNum")).Text.ToString());