1、GridView1_RowDataBound
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
//这里的处理是为了回显之前选中的情况
if (e.Row.RowIndex > -1 && this.SelectedItems != null)
{
DataRowView row = e.Row.DataItem as DataRowView;
CheckBox cb = e.Row.FindControl("CheckBox1") as CheckBox;
if (this.SelectedItems.Contains(row["file_id"].ToString()))
cb.Checked = true;
else
cb.Checked = false;
}
//改变颜色
if (e.Row.RowType == DataControlRowType.DataRow)
{
//得到正在被创建的项的称呼
string uploadState = (string)DataBinder.Eval(e.Row.DataItem, "file_uploadstate");
//变颜
if (uploadState == "1")
{
e.Row.BackColor = System.Drawing.Color.LightPink;
e.Row.ForeColor = System.Drawing.Color.Maroon;
}
else if (uploadState == "2")
{
e.Row.BackColor = System.Drawing.Color.LightCyan;
e.Row.ForeColor = System.Drawing.Color.DarkBlue;
}
}
}
2、分页
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
InitPage();
}
//重新绑定
private void InitPage()
{
GridViewBind2();
}
3、行删除
首先在GridView的<Columns></Columns>内添加
<asp:CommandField ShowDeleteButton="True" HeaderText="操作" />
后添加GridView1_RowDeleting（行删除事件）
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
string id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
string strConn = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
string strSql = "delete from archives where ar_id=" + id;
try
{
SqlConnection conn = new SqlConnection(strConn);
if (conn.State.ToString() == "Closed")
conn.Open();
SqlCommand comm = new SqlCommand(strSql, conn);
comm.ExecuteNonQuery();
comm.Dispose();
if (conn.State.ToString() == "Open")
conn.Close();
GridView1.EditIndex = -1;
GridViewBind();
}
catch (Exception ex)
{
Response.Write("数据库错误，错误原因：" + ex.Message);
Response.End();
}
}
4、GridView中的值自动换行或不换行
GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word");
加到DataBound事件里面去
或放到
protected void Page_Load(object sender, EventArgs e)
{
//正常换行
GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal");
//下面这行是自动换行
GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word");
if (!IsPostBack)
{
bind();//调用数据绑定即可
}
}
5、表格线颜色的问题
设置每一列的ITEMSTYLE
<asp:TemplateField ItemStyle-BorderColor ="Black" ItemStyle-BorderWidth="1" ItemStyle-BorderStyle="Solid">
<ItemTemplate>
<asp:Label ID="lblColumns3" Width = "120" runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"ID") %>' />
</ItemTemplate>
</asp:TemplateField>
6、行编辑事件
代码
2 /// 行编辑事件
3 /// </summary>
4 /// <param name="sender"></param>
5 /// <param name="e"></param>
6 protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
7 {
8 GridView1.EditIndex = e.NewEditIndex;
9 GridViewBind();
10 }
11 /// <summary>
12 /// 行更新事件
13 /// </summary>
14 /// <param name="sender"></param>
15 /// <param name="e"></param>
16 protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
17 {
18 string id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
19
20 DataTable dt = (DataTable)Session["table"];
21 GridViewRow row = GridView1.Rows[e.RowIndex];
22 string obj1 = ((TextBox)(row.Cells[2].Controls[0])).Text;
23 TextBox tb = row.Cells[3].Controls[0] as TextBox;
24 tb.TextMode = TextBoxMode.Password;
25
26 string obj2 = ((TextBox)(row.Cells[3].Controls[0])).Text;
27
28 obj2 = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(obj2, "MD5");
29 dt.Rows[row.DataItemIndex]["Pws"] = obj2;
30 using (SqlConnection sqlConn = new SqlConnection(SqlHelp.connString))
31 {
32 sqlConn.Open();
33 string strSql = string.Format(
34 "Update Express_Login Set Name='{0}', Pws='{1}' " +
35 " where ID='{2}'", obj1.ToString(), obj2.ToString(), id);
36 using (SqlCommand sqlComm = new SqlCommand(strSql, sqlConn))
37 {
38 SqlDataAdapter da = new SqlDataAdapter();
39
40 da.UpdateCommand = sqlComm;
41 da.Update(dt);
42 }
43 }
44 GridView1.EditIndex = -1;
45 GridViewBind();
46 }
47 /// <summary>
48 /// 绑定函数
49 /// </summary>
50 private void BindData()
51 {
52 GridView1.DataSource = Session["table"];
53 GridView1.DataBind();
54 }
55 /// <summary>
56 /// 更新取消事件
57 /// </summary>
58 /// <param name="sender"></param>
59 /// <param name="e"></param>
60 protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
61 {
62 GridView1.EditIndex = -1;
63 GridViewBind();
64 }
65
66 /// <summary>
67 /// 行绑定，调整编辑控件项的属性
68 /// </summary>
69 /// <param name="sender"></param>
70 /// <param name="e"></param>
71 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
72 {
73 if (e.Row.RowType == DataControlRowType.DataRow)
74 {
75 if (e.Row.RowState==DataControlRowState.Edit)
76 {
77 TextBox tbNewName=(TextBox)e.Row.Cells[2].Controls[0];
78 tbNewName.MaxLength = 16;
79 TextBox tbNewPws = (TextBox)e.Row.Cells[3].Controls[0];
80 tbNewPws.TextMode = TextBoxMode.Password;
81 tbNewPws.MaxLength = 10;
82 }
83 }
84 }
85
86