经典的GridView72种使用技巧(8)

public partial class _Default : System.Web.UI.Page {

SqlConnection sqlcon; SqlCommand sqlcom;

string strCon = \Source=(local);Database=北风贸易;Uid=sa;Pwd=sa\

protected void Page_Load(object sender, EventArgs e) {

if (!IsPostBack) {

ViewState[\= \身份证号码\ ViewState[\= \ bind(); } }

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) {

GridView1.EditIndex = e.NewEditIndex; bind(); }

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e) {

string sqlstr = \from 飞狐工作室 where 身份证号码='\+ GridView1.DataKeys[e.RowIndex].Value.ToString() + \ sqlcon = new SqlConnection(strCon); sqlcom = new SqlCommand(sqlstr,sqlcon); sqlcon.Open();

sqlcom.ExecuteNonQuery(); sqlcon.Close(); bind(); }

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) {

sqlcon = new SqlConnection(strCon);

string sqlstr = \飞狐工作室 set 姓名='\

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + \家庭住址='\

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + \where 身份证号码='\

+ GridView1.DataKeys[e.RowIndex].Value.ToString() + \ sqlcom=new SqlCommand(sqlstr,sqlcon); sqlcon.Open();

sqlcom.ExecuteNonQuery(); sqlcon.Close();

GridView1.EditIndex = -1; bind(); }

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) {

GridView1.EditIndex = -1; bind(); }

public void bind() {

string sqlstr = \top 5 * from 飞狐工作室\ sqlcon = new SqlConnection(strCon);

SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open();

myda.Fill(myds, \飞狐工作室\ GridView1.DataSource = myds;

GridView1.DataKeyNames = new string[] { \身份证号码\}; GridView1.DataBind();

for (int i = 0; i <= GridView1.Rows.Count - 1; i++) {

DataRowView mydrv; string gIntro;

if (GridView1.PageIndex == 0) {

mydrv = myds.Tables[\飞狐工作室\ gIntro = Convert.ToString(mydrv[\家庭住址\ GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);

} else {

mydrv = myds.Tables[\飞狐工作室\+ (5 * GridView1.PageIndex)];

gIntro = Convert.ToString(mydrv[\家庭住址\ GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2); } }

sqlcon.Close(); }

public string SubStr(string sString, int nLeng) {

if (sString.Length <= nLeng) {

return sString; }

string sNewStr = sString.Substring(0, nLeng); sNewStr = sNewStr + \ return sNewStr; }

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) {

if (e.Row.RowIndex != -1) {

int id = e.Row.RowIndex + 1; e.Row.Cells[0].Text = id.ToString(); } } }

11.GridView一般换行与强制换行：

效果图：

首先设置

gridview里有一列绑定的数据很长，显示的时候在一行里面显示，页面拉得很宽。 原因是连续英文段为一个整体导致的，在RowDataBound中添加上了一句e.Row.Cells[2].Style.Add(\\就可以。 如果要给所有的列增加此属性：

protected void Page_Load(object sender, EventArgs e) {

//正常换行

GridView1.Attributes.Add(\\mal\

//下面这行是自动换行

GridView1.Attributes.Add(\\ak-word\

if (!IsPostBack) {

bind();//调用数据绑定即可 } }

总之：善用CSS的word-break:break-all;word-wrap:break-word属性即可，这个属性是通用的对于顽固的南换行问题都可以解决，不局限于GridView。 12.GridView显示隐藏某一列：

本方案，不同于网上其他方式， 处理使用一个CheckBox更人性化，这样可以隐藏不必要的列，让用户自己选择需要出现的列，在处理多列时这是一个很好的解决方案！

效果图： 图1-开始

图2-点击显示的CheckBox后

解决方案：

public void bind() {

string sqlstr = \top 5 * from 飞狐工作室\ sqlcon = new SqlConnection(strCon);

SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open();

myda.Fill(myds, \飞狐工作室\ GridView1.DataSource = myds;