gridview 在列表中对信息进行增删改，通过VIEWSTATE进行缓存，然后一次性将数据提交到服务器端。

为XX人写的DEMO样例，功能实现：gridview 在列表中对信息进行增删改，通过VIEWSTATE进行缓存，然后一次性将数据提交到服务器端。 下载地址：DOWNLOAD

代码：



protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DataTable dt = GetData();
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
}
}

public DataTable GetData()
{
DataTable dt = new DataTable();
dt.Columns.Add("Title");
dt.Columns.Add("ID");

DataRow dr = dt.NewRow();
dr["Title"] = "测试标题";
dr["ID"] = "1";
dt.Rows.Add(dr);

DataRow dr1 = dt.NewRow();
dr1["Title"] = "测试标题";
dr1["ID"] = "1";
dt.Rows.Add(dr1);

//新增行处理
if (ViewState["ADDIdS"] != null)
{
string idAdds = ViewState["ADDIdS"].ToString();
idAdds = idAdds.TrimStart(char.Parse(","));
string[] items = idAdds.Split(char.Parse(","));

for (int i = 0; i < items.Length; i++)
{
DataRow dtOne = dt.NewRow();
dtOne["ID"] = (items[i].Split(char.Parse("|")))[0];
dtOne["Title"] = (items[i].Split(char.Parse("|")))[1];
dt.Rows.Add(dtOne);
}

}
//删除行处理 -- 自己搞定
if (ViewState["DeleteIdS"] != null)
{
string[] ids = (ViewState["DeleteIdS"].ToString()).TrimStart(char.Parse(",")).Split(char.Parse(","));
for (int i = 0; i < ids.Length; i++)
{
for (int ii = 0; ii < dt.Rows.Count; ii++)
{
if (dt.Rows[ii]["ID"].ToString() == ids[i])
{
dt.Rows[ii].Delete();
break;
}
}
}

}

return dt;
}

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
if (ViewState["DeleteIdS"] == null)
{
ViewState.Add("DeleteIdS", string.Format(",{0}", GridView1.DataKeys[e.RowIndex].Value.ToString()));
}
else
{
ViewState["DeleteIdS"] = ViewState["DeleteIdS"].ToString() + string.Format(",{0}", GridView1.DataKeys[e.RowIndex].Value.ToString()); // ViewState["DeleteIdS"]
}

//检索增加记录，看看是否存在删除的ID
string idAdds = ViewState["ADDIdS"] != null ? ViewState["ADDIdS"].ToString() : null;
if (idAdds != null)
{
idAdds = idAdds.TrimStart(char.Parse(","));
string[] items = idAdds.Split(char.Parse(","));

//过滤相关记录并进行组装，
for (int i = 0; i < items.Length; i++)
{
}
}

DataTable dt = GetData();
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
}

protected void Button1_Click(object sender, EventArgs e)
{
if (ViewState["ADDIdS"] == null)
{
ViewState.Add("ADDIdS", string.Format(",{0}|{1}",Guid.NewGuid().ToString(),this.TextBox1.Text));
}
else
{
ViewState["ADDIdS"] = ViewState["ADDIdS"].ToString() + string.Format(",{0}|{1}",Guid.NewGuid().ToString(),this.TextBox1.Text); // ViewState["DeleteIdS"]
}

DataTable dt = GetData();
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
}

protected void Button2_Click(object sender, EventArgs e)
{
//新增行数据
string idAdds = ViewState["ADDIdS"] != null? ViewState["ADDIdS"].ToString() : null; //
//删除行数据
string[] ids = ViewState["DeleteIdS"] != null ? null:(ViewState["DeleteIdS"].ToString()).TrimStart(char.Parse(",")).Split(char.Parse(","));

//新增行处理
if (idAdds != null)
{
idAdds = idAdds.TrimStart(char.Parse(","));
string[] items = idAdds.Split(char.Parse(","));

//新增行处理
for (int i = 0; i < items.Length; i++)
{
}
}

}