[英]C# equivalent to VB.NET 'Handles button1.Click, button2.Click'
[英]Equivalent in C# to “Handles” in VB.NET
我在Visual Basic中有此代碼,並且在測試時可以工作。 所有行都有備用顏色。
Private Sub GridView1_RowCreated(ByVal sender As Object, _
ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) _
Handles GridView1.RowDataBound
If e.Row.RowType = DataControlRowType.DataRow Then
Dim RowNum as Integer
RowNum = e.Row.RowIndex
If RowNum mod 2 = 1 Then
e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#DDDDDD'")
Else
e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'")
End If
e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='DeepSkyBlue'")
e.Row.Attributes("onclick") = Me.Page.ClientScript.GetPostBackClientHyperlink(Me.GridView1, "Select$" & e.Row.RowIndex)
End If
End Sub
由於我在C#環境下工作,因此將其轉換為C#:
private void GridView1_RowCreated(object sender, System.Web.UI.WebControls.GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
int RowNum = e.Row.RowIndex;
if (RowNum % 2 == 1)
{
e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#DDDDDD'");
}
else
{
e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");
}
e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='DeepSkyBlue'");
e.Row.Attributes["onclick"] = this.Page.ClientScript.GetPostBackClientHyperlink(this.GridView1, "Select$" + e.Row.RowIndex);
}
}
這樣可以與Visual Basic中的“句柄”選項一樣嗎? 如果可能,請提供代碼。
您需要通過標記添加事件處理程序
<asp:GridView OnRowCreated="GridView1_RowCreated" runat="server" ID="MyGrid">
</asp:GridView>
或來自代碼隱藏
protected void Page_Load(object sender, EventArgs e)
{
MyGrid.RowCreated += GridView1_RowCreated;
}
您必須像這樣在Page_Load()中添加處理程序:
Protected Void Page_Load(Object Sender, EventArgs e){
GridView1.RowCreated += GridView1_RowCreated;
}
您可以嘗試
GridView1.RowCreated += GridView1_RowCreated;
注意:建議您在Page_Init
(最佳實踐)中初始化您的委托
C#作為一種語言沒有像“ handles”關鍵字這樣的概念。 相反,您必須顯式連接事件定義。
嘗試
protected void Page_Load(object sender, EventArgs e)
{
GridView1.RowCreated += GridView1_RowCreated;
}
C#通過'+ ='運算符添加處理程序,並通過'-='運算符將其刪除。
即使在VB.NET中,如果使用AutoEventWireUp =“ true”,也可以跳過“句柄”。
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