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GridView編輯刪除操作

2014.08.08

第一種：使用DataSource數(shù)據(jù)源中自帶的編輯刪除方法，這種不常用，在這里就不加說明了。

第二種：使用GridView的三種事件：GridView1_RowEditing（編輯）、GridView1_RowUpdating（更新）、GridView1_RowCancelingEdit（取消編輯）。GridView1屬性中將DataKeyNames的值設(shè)置為主鍵名，否則找不到索引，這個很重要哦。

該方法有2種操作，一種是不對綁定列轉(zhuǎn)換為模板列，另外一種是轉(zhuǎn)換為模板列。

這里先說不轉(zhuǎn)換為模板列的情況；

首先;先對GridView進行數(shù)據(jù)綁定，不管用代碼綁定還是DataSource綁定都可以。綁定好后，對GridView添加綁定列

和編輯列

（注意這里，添加好后不做任何改動，千萬不要將它們轉(zhuǎn)換為模板列），添加好后，將所要綁定的數(shù)據(jù)庫表字段填入

屬性中。

然后，分別激活上述提到的三種事件，然后添加代碼：

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

{ //執(zhí)行刪除

string str = "delete from tb_hby where id='"+GridView1.DataKeys[e.RowIndex].Value.ToString()+"'";

db.Delete(str); //db是操作類的實例，Delete是刪除數(shù)據(jù)的方法

this.GridView1.DataBind();

}

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

{//執(zhí)行更新

string cell1 = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim();//第一列注意這種寫法很重要

string cell2 = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim();//第二列注意這種寫法很重要

string str = "update tb_hby set hby_title='" + cell1 + "',hby_Datetime='" + cell2 + "' where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

db.Update(str);//db是操作類的實例，Update是更新數(shù)據(jù)的方法

GridView1.EditIndex = -1;

GView();

}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

{//激活編輯按鈕的事件

this.GridView1.EditIndex = e.NewEditIndex;

GView();

}

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

{//取消編輯狀態(tài)的事件

GridView1.EditIndex = -1;

GView();

}

說明：此方法中，如果要求某個綁定列不做編輯，則在它的前臺代碼中加入ReadOnly=”true”即可。

此方法有一些缺點，比如對日期列進行格式化時，顯示的時候是格式化后的日期，但是在編輯狀態(tài)下仍然顯示出日期的原貌，還有，某一列的字符太長時，不好對它進行字符截取。

在點擊刪除按鈕的時候，如果需要一個彈出刪除提示，則要將刪除列轉(zhuǎn)化為模板列，其代碼如下：

<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Delete" OnClientClick="return confirm('確定要刪除嗎？')" Text="刪除"></asp:LinkButton>

</ItemTemplate>

也可以這樣寫：

在RowDataBind事件中：

if (e.Row.RowType == DataControlRowType.DataRow)

{

LinkButton lnkdelete = (LinkButton)e.Row.FindControl("lnkdelete");

lnkdelete.Attributes.Add("onclick","return confirm('您確定要刪除嗎？')");

}

如果不轉(zhuǎn)化為模板列，這這樣寫：

if (e.Row.RowType == DataControlRowType.DataRow)

{

if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)

{

//((LinkButton)e.Row.Cells[7].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你確認要刪除：\"" + e.Row.Cells[0].Text + "\"嗎?')");

((LinkButton)e.Row.Cells[7].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你確認要刪除嗎?')");

}

完整代碼如下：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="id" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowUpdating="GridView1_RowUpdating">

<asp:BoundField DataField="id" HeaderText="id" InsertVisible="False" ReadOnly="True" SortExpression="id" />

<asp:BoundField DataField="hby_Title" HeaderText="hby_Title" SortExpression="hby_Title" AccessibleHeaderText="fgfg" />

<asp:BoundField DataField="hby_Datetime" DataFormatString="{0:HH:mm}" />

<asp:CommandField ShowEditButton="True" />

<asp:TemplateField ShowHeader="False">

<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Delete" OnClientClick="return confirm('確定要刪除嗎？')"

Text="刪除"></asp:LinkButton>

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

后臺代碼：

public partial class Default3 : System.Web.UI.Page

{

DBconn db = new DBconn();

protected void Page_Load(object sender, EventArgs e)

{

if (!Page.IsPostBack)

{

GView();

}

private void GView()

{

string strbind = "select id,hby_title,hby_Datetime from tb_hby order by id desc";

this.GridView1.DataSource = db.getDataSet(strbind);

this.GridView1.DataBind();

}

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

{

string str = "delete from tb_hby where id='"+GridView1.DataKeys[e.RowIndex].Value.ToString()+"'";

db.Delete(str);

this.GridView1.DataBind();

}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

{

this.GridView1.EditIndex = e.NewEditIndex;

GView();

}

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

{

string cell1 = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim();//第一列

string cell2 = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim();//第二列

string str = "update tb_hby set hby_title='" + cell1 + "',hby_Datetime='" + cell2 + "' where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

db.Update(str);//db是操作類的實例，Update是更新數(shù)據(jù)的方法

GridView1.EditIndex = -1;

GView();

}

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

{

GridView1.EditIndex = -1;

GView();

}

以下是對綁定列轉(zhuǎn)換為模板列的操作（包括將編輯列和刪除列都轉(zhuǎn)化為模板列）：

private void GView()

{//綁定數(shù)據(jù)源

string strbind = "select top 15 id,hby_title,hhhhh,hby_Datetime from tb_hby";

this.GridView1.DataSource = db.getDataSet(strbind);

this.GridView1.DataBind();

}

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

{//執(zhí)行刪除

string str = "delete from tb_hby where id='"+GridView1.DataKeys[e.RowIndex].Value.ToString()+"'";

db.Delete(str);

//GView();

Response.Write("<script language='JavaScript'>");

Response.Write("alert('刪除成功!');location.href='default3.aspx';");

Response.Write("</script>");

}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

{//激活編輯

this.GridView1.EditIndex = e.NewEditIndex;

GView();

}

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

{//執(zhí)行更新

string EditTitle = ((TextBox)(GridView1.Rows[e.RowIndex].FindControl("TextBox1"))).Text.ToString().Trim();

string DateTimestr = ((TextBox)(GridView1.Rows[e.RowIndex].FindControl("TextBox2"))).Text;//注意：日期字段不要加ToString()，否則會報錯，而nvarchar和int的字段可以加

string hhh = ((TextBox)(GridView1.Rows[e.RowIndex].FindControl("TextBox3"))).Text.ToString();

string str = "update tb_hby set hby_title='" +EditTitle + "',hby_Datetime='" + DateTimestr + "',hhhhh='"+hhh+"' where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

db.Update(str);

GridView1.EditIndex = -1;

GView();

}

這里千萬要注意：

當對綁定列轉(zhuǎn)換為模板列了之后，編輯列這樣寫：

string EditTitle = ((TextBox)(GridView1.Rows[e.RowIndex].FindControl("TextBox1"))).Text.ToString().Trim();

不轉(zhuǎn)化為模板列的時候，編輯列這樣寫：

string EditTitle = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim();

這里容易搞錯，以致經(jīng)常發(fā)生疑惑。

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

{//取消編輯狀態(tài)

GridView1.EditIndex = -1;

GView();

}

以下是前臺代碼：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="id" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowUpdating="GridView1_RowUpdating">

<asp:BoundField DataField="id" HeaderText="id" InsertVisible="False" ReadOnly="True"

SortExpression="id" />

<asp:TemplateField AccessibleHeaderText="fgfg" HeaderText="hby_Title" SortExpression="hby_Title">

<asp:TextBox ID="TextBox1" runat="server" Text='<%# Eval("hby_Title") %>'></asp:TextBox>

</EditItemTemplate>

<asp:Label ID="Label1" runat="server" Text='<%# Eval("hby_Title") %>'></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField>

<asp:TextBox ID="TextBox2" runat="server" Text='<%# Eval("hby_Datetime", "{0:HH:mm}") %>'></asp:TextBox>

</EditItemTemplate>

<asp:Label ID="Label2" runat="server" Text='<%# Eval("hby_Datetime", "{0:HH:mm}") %>'></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="好">

<asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("hhhhh") %>'></asp:TextBox>

</EditItemTemplate>

<asp:Label ID="Label3" runat="server" Text='<%# Bind("hhhhh") %>'></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField ShowHeader="False">

<asp:LinkButton ID="LkBtnUpdate" runat="server" CausesValidation="True" CommandName="Update"

Text="更新"></asp:LinkButton>

<asp:LinkButton ID="LkBtnCtrl" runat="server" CausesValidation="False" CommandName="Cancel"

Text="取消"></asp:LinkButton>

</EditItemTemplate>

<img src="img/edt.gif" /><asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" CommandName="Edit"

Text="編輯"></asp:LinkButton>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField ShowHeader="False" HeaderText="刪除">

<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Delete" OnClientClick="return confirm('確定要刪除嗎？')"

Text="刪除"></asp:LinkButton>

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

以上綁定中，無論是Eval或者Bind都可以。

第三種方法：將編輯和顯示都放在模板列中，代碼如下：

前臺綁定：

<asp:TemplateField HeaderText="出團日期">

<asp:TextBox ID="tbx_ctrq" runat="server" Text='<%# Eval("cspd_ctrq") %>' Visible="false"></asp:TextBox>

<asp:Label ID="lbl_ctrq" runat="server" Text='<%# Eval("cspd_ctrq") %>'></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="價格">

<asp:TextBox ID="tbx_price" runat="server" Text='<%# Eval("cspd_price") %>' Visible="false"></asp:TextBox>

<asp:Label ID="lbl_price" runat="server" Text='<%# Eval("cspd_price") %>'></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="編輯" ShowHeader="False">

<asp:LinkButton ID="LB_edit" runat="server" CausesValidation="False" CommandArgument='<%# ((GridViewRow) Container).RowIndex %>' CommandName="iEdit" Text="編輯"></asp:LinkButton>

<asp:LinkButton ID="LB_upd" runat="server" CausesValidation="True" CommandName="iUpdate"

Visible="false" CommandArgument='<%# ((GridViewRow) Container).RowIndex %>' Text="更新"></asp:LinkButton>

<asp:LinkButton ID="LB_cancel" runat="server" CausesValidation="False" CommandName="iCancel" Visible="false" CommandArgument='<%# ((GridViewRow) Container).RowIndex %>' Text="取消"></asp:LinkButton>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="刪除">

<asp:LinkButton ID="LB_Del" runat="server" OnClientClick="return confirm('確定要刪除嗎？')"

CommandName="Delete" Text="刪除"></asp:LinkButton>

</ItemTemplate>

</asp:TemplateField>

后臺代碼如下：

protected void GV_Main_RowCommand(object sender, GridViewCommandEventArgs e)

{

if (e.CommandName == "iEdit")

{

int rowIndex = Convert.ToInt32(e.CommandArgument);

((LinkButton)GV_Main.Rows[rowIndex].FindControl("LB_edit")).Visible = false;

((LinkButton)GV_Main.Rows[rowIndex].FindControl("LB_upd")).Visible = true;

((LinkButton)GV_Main.Rows[rowIndex].FindControl("LB_cancel")).Visible = true;

((Label)GV_Main.Rows[rowIndex].FindControl("lbl_chanpin")).Visible = false;

((TextBox)GV_Main.Rows[rowIndex].FindControl("tbx_chanpin")).Visible = true;

((Label)GV_Main.Rows[rowIndex].FindControl("lbl_ctrq")).Visible = false;

((TextBox)GV_Main.Rows[rowIndex].FindControl("tbx_ctrq")).Visible = true;

}

if (e.CommandName == "iCancel")

{

int rowIndex = Convert.ToInt32(e.CommandArgument);

((LinkButton)GV_Main.Rows[rowIndex].FindControl("LB_edit")).Visible = true;

((LinkButton)GV_Main.Rows[rowIndex].FindControl("LB_upd")).Visible = false;

((LinkButton)GV_Main.Rows[rowIndex].FindControl("LB_cancel")).Visible = false;

((Label)GV_Main.Rows[rowIndex].FindControl("lbl_chanpin")).Visible = true;

((TextBox)GV_Main.Rows[rowIndex].FindControl("tbx_chanpin")).Visible = false;

((Label)GV_Main.Rows[rowIndex].FindControl("lbl_ctrq")).Visible = true;

((TextBox)GV_Main.Rows[rowIndex].FindControl("tbx_ctrq")).Visible = false;

}

if (e.CommandName == "iUpdate")

{

int rowIndex = Convert.ToInt32(e.CommandArgument);

if (!wpf.IsNum(((TextBox)GV_Main.Rows[rowIndex].FindControl("tbx_price")).Text.Trim()))

{

Page.ClientScript.RegisterStartupScript(this.GetType(), "Startup", "<script>alert('價格必須是數(shù)字！');</script>");

}

string strupd = "UPDATE [tb_cspd] SET [cspd_chanpin] = '" + wpf.checkStr(((TextBox)GV_Main.Rows[rowIndex].FindControl("tbx_chanpin")).Text.Trim()) + "', [cspd_ctrq] = '" + wpf.checkStr(((TextBox)GV_Main.Rows[rowIndex].FindControl("tbx_ctrq")).Text.Trim()) + "', WHERE [id] = " + GV_Main.DataKeys[rowIndex][0].ToString();

//Response.Write(strupd);

wpf.SqlQuery(strupd);

GV_Main.DataBind();

}

點擊編輯按鈕后統(tǒng)一列在文本框中進行編輯：

效果：

首先還是在GridView1屬性中將DataKeyNames的值設(shè)置為主鍵名

前臺代碼：

<asp:GridView ID="GridView3" runat="server" AutoGenerateColumns="False" OnRowCommand="GridView3_RowCommand" DataKeyNames="News_Id">

<asp:BoundField DataField="News_Title" HeaderText="標題" />

<asp:BoundField DataField="News_Source" HeaderText="來源" />

<asp:BoundField DataField="News_Date" HeaderText="日期" />

<asp:TemplateField HeaderText="編輯">

<asp:LinkButton ID="LkBtnbianji" runat="server" CommandName="edit_ok" CommandArgument='<%# ((GridViewRow) Container).RowIndex %>'>編輯</asp:LinkButton>

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

后臺代碼：

private void GView3()

{

string strbind = "select News_Id,News_Title,News_Source,News_Date from tb_News";

this.GridView3.DataSource = db.getDataSet(strbind);

this.GridView3.DataBind();

}

protected void GridView3_RowCommand(object sender, GridViewCommandEventArgs e)

{

if (e.CommandName == "edit_ok")

{

int rowIndex = Convert.ToInt32(e.CommandArgument);

string strbind = "select News_Id,News_Title,News_Source,News_Date from tb_News where News_Id=" + GridView3.DataKeys[rowIndex][0].ToString();

DataRow dr = db.getDataSet(strbind).Tables[0].Rows[0];

this.BunAdd.CommandArgument = GridView3.DataKeys[rowIndex][0].ToString();

this.TextTitle.Text = dr["News_Title"].ToString();

this.TextType.Text=dr["News_Source"].ToString();

this.TextDatetime.Text = dr["News_Date"].ToString();

}

protected void BunAdd_Click(object sender, EventArgs e)

{

string up = "update tb_News set News_Title='" + this.TextTitle.Text.Trim() + "',News_Source='" + this.TextType.Text.Trim() + "',News_Date='" + this.TextDatetime.Text.Trim() + "' where News_Id="+BunAdd.CommandArgument;

db.Update(up);

GView3();

}

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