刪除網格中的單行

我需要從網格中刪除單行，但每次單擊網格中的刪除按鈕時，我的整個數據庫都將被刪除。請幫我糾正我的代碼謝謝。刪除網格中的單行

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e) 
{ 

    GridViewRow row = (GridViewRow)GridView1.Rows[e.RowIndex]; 
    gridbind(); 
    con.Open(); 
    SqlCommand cmd = new SqlCommand ("delete from registration where Id=" + lblid.Text + "", con); 
    cmd.ExecuteNonQuery(); 
    con.Close(); 
}

和gridbind功能是：

private void gridbind() 
{ 

    string sql = string.Empty; 
    string id = this.txtid.Text; 
    string gender = this.DropDownList1.SelectedValue; 

    if (gender =="male" || gender == "female") 
     sql = "Select * from registration WHERE Id like '%" + id + "%' AND gender = '"+gender+"'"; 

    if (gender =="male" || gender == "female" && id == this.txtid.Text) 
     sql = " Select * from registration Where Id like '%" + id + "%' "; 

    if (gender == "all" && id == this.txtid.Text) 
     sql = " Select * from registration Where Id like '%" + id + "%' "; 

    SqlCommand cmd = new SqlCommand(sql, con); 

    cmd.Parameters.AddWithValue("@id",id); 
    cmd.Parameters.AddWithValue("@gender", gender); 

    con.Open(); 

    SqlDataAdapter da = new SqlDataAdapter(cmd); 
    DataSet ds = new DataSet(); 

    da.Fill(ds); 

    GridView1.DataSource = ds; 
    GridView1.DataBind(); 

    con.Close(); 
}

來源

2013-07-02 Isbah Khan

lblid.Text您在哪裏設置此文本？ –

爲什麼你綁定你的數據源，然後**刪除行？ – Tim

另外，你的if語句沒有意義。 'id == this.txtid.Text'將始終計算爲true，因爲id初始化爲'string id = this.txtid.Text;'。 – Tim

首先你要使用的FindControl名爲「lblid」行標籤。

秒，結束綁定。

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e) 
{ 

    GridViewRow row = (GridViewRow)GridView1.Rows[e.RowIndex]; 
    Label theGridRowLabel = (Label)row.FindControl("lblid"); 

    con.Open(); 
    SqlCommand cmd = 
      new SqlCommand ("delete from registration where Id=" + theGridRowLabel.Text, con); 
    cmd.ExecuteNonQuery(); 
    con.Close(); 

    gridbind(); 
}

來源

2013-07-02 07:48:10 kobe

刪除網格中的單行

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