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Overview

You can send text, custom, and rich media messages, all of which belong to the Message type.

Key APIs

The MsgSendMessage API (details) is the core API for sending a message. It supports sending all types of messages.
The API is detailed as follows:
Type
Name
Description
System.String
conv_id
Conversation ID
TIMConvType
conv_type
Conversation type
Message
message
Message
System.Text.StringBuilder
message_id
Message ID
ValueCallback
| ValueCallback

callback
Async callback

Sending Text Messages

public static void MsgSendMessage() {
string conv_id = ""; // The conversation ID of a one-to-one message is the `userID`, and that of a group message is the `groupID`.
Message message = new Message
{
message_conv_id = conv_id,
message_conv_type = TIMConvType.kTIMConv_C2C, // For a group message, this value is `TIMConvType.kTIMConv_Group`
message_elem_array = new List<Elem>
{
new Elem
{
elem_type = TIMElemType.kTIMElem_Text,
text_elem_content = "This is an ordinary text message"
}
}
};
StringBuilder messageId = new StringBuilder(128);

TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, string json_param, string user_data)=>{
// Async message sending result
});
// The message ID messageId returned when the message is sent
}

Sending Image Messages

public static void MsgSendMessage() {
string conv_id = ""; // The conversation ID of a one-to-one message is the `userID`, and that of a group message is the `groupID`.
Message message = new Message
{
message_conv_id = conv_id,
message_conv_type = TIMConvType.kTIMConv_C2C, // For a group message, this value is `TIMConvType.kTIMConv_Group`
message_elem_array = new List<Elem>
{
new Elem
{
elem_type = TIMElemType.kTIMElem_Image,
image_elem_orig_path = "/Users/xxx/xxx.png", // Absolute path to the file
image_elem_level = TIMImageLevel.kTIMImageLevel_Orig // Send an original image
}
}
};
StringBuilder messageId = new StringBuilder(128);

TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, string json_param, string user_data)=>{
// Async message sending result
});
// The message ID messageId returned when the message is sent
}

Sending a Voice Message

public static void MsgSendMessage() {
string conv_id = ""; // The conversation ID of a one-to-one message is the `userID`, and that of a group message is the `groupID`.
Message message = new Message
{
message_conv_id = conv_id,
message_conv_type = TIMConvType.kTIMConv_C2C, // For a group message, this value is `TIMConvType.kTIMConv_Group`
message_elem_array = new List<Elem>
{
new Elem
{
elem_type = TIMElemType.kTIMElem_Sound,
sound_elem_file_path = "/Users/xxx/xxx.mp3", // Absolute file path
sound_elem_file_size = 10 // Audio duration

}
}
};
StringBuilder messageId = new StringBuilder(128);

TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, string json_param, string user_data)=>{
// Async message sending result
});
// The message ID messageId returned when the message is sent
}

Sending a Video Message

public static void MsgSendMessage() {
string conv_id = ""; // The conversation ID of a one-to-one message is the `userID`, and that of a group message is the `groupID`.
Message message = new Message
{
message_conv_id = conv_id,
message_conv_type = TIMConvType.kTIMConv_C2C, // For a group message, this value is `TIMConvType.kTIMConv_Group`
message_elem_array = new List<Elem>
{
new Elem
{
elem_type = TIMElemType.kTIMElem_Video,
video_elem_video_path = "/Users/xxx/xxx.mp4", // Absolute file path
video_elem_video_type = "mp4", // Video type
video_elem_video_duration = 10, // Video duration

video_elem_image_path = "Absolute path of the local video thumbnail file",
video_elem_image_type = "png", // Type of the video screenshot file
video_elem_image_size = 100, // Size of the video screenshot file
video_elem_image_width = 1920, // Width of the video screenshot file
video_elem_image_height = 1080, // Height of the video screenshot file
}
}
};
StringBuilder messageId = new StringBuilder(128);

TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, string json_param, string user_data)=>{
// Async message sending result
});
// The message ID messageId returned when the message is sent
}

Sending a File Message

public static void MsgSendMessage() {
string conv_id = ""; // The conversation ID of a one-to-one message is the `userID`, and that of a group message is the `groupID`.
Message message = new Message
{
message_conv_id = conv_id,
message_conv_type = TIMConvType.kTIMConv_C2C, // For a group message, this value is `TIMConvType.kTIMConv_Group`
message_elem_array = new List<Elem>
{
new Elem
{
elem_type = TIMElemType.kTIMElem_File,
file_elem_file_path = "/Users/xxx/xxx.x", // Absolute file path
file_elem_file_name = "Filename",
}
}
};
StringBuilder messageId = new StringBuilder(128);

TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, string json_param, string user_data)=>{
// Async message sending result
});
// The message ID messageId returned when the message is sent
}

Sending a Location Message

public static void MsgSendMessage() {
string conv_id = ""; // The conversation ID of a one-to-one message is the `userID`, and that of a group message is the `groupID`.
Message message = new Message
{
message_conv_id = conv_id,
message_conv_type = TIMConvType.kTIMConv_C2C, // For a group message, this value is `TIMConvType.kTIMConv_Group`
message_elem_array = new List<Elem>
{
new Elem
{
elem_type = TIMElemType.kTIMElem_Location,
location_elem_desc = "Shennan Boulevard, Nanshan District, Shenzhen",// Location information digest
location_elem_longitude = 34, // Longitude
location_elem_latitude = 20 // Latitude
}
}
};
StringBuilder messageId = new StringBuilder(128);

TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, string json_param, string user_data)=>{
// Async message sending result
});
// The message ID messageId returned when the message is sent
}

Send an Emoji Message

public static void MsgSendMessage() {
string conv_id = ""; // The conversation ID of a one-to-one message is the `userID`, and that of a group message is the `groupID`.
Message message = new Message
{
message_conv_id = conv_id,
message_conv_type = TIMConvType.kTIMConv_C2C, // For a group message, this value is `TIMConvType.kTIMConv_Group`
message_elem_array = new List<Elem>
{
new Elem
{
elem_type = TIMElemType.kTIMElem_Face,
face_elem_index = 0,
face_elem_buf = ""
}
}
};
StringBuilder messageId = new StringBuilder(128);

TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, string json_param, string user_data)=>{
// Async message sending result
});
// The message ID messageId returned when the message is sent
}

Sending Custom Messages

public static void MsgSendMessage() {
string conv_id = ""; // The conversation ID of a one-to-one message is the `userID`, and that of a group message is the `groupID`.
Message message = new Message
{
message_conv_id = conv_id,
message_conv_type = TIMConvType.kTIMConv_C2C, // For a group message, this value is `TIMConvType.kTIMConv_Group`
message_elem_array = new List<Elem>
{
new Elem
{
elem_type = TIMElemType.kTIMElem_Custom,
custom_elem_data = "",
custom_elem_desc = "",
custom_elem_ext = ""
}
}
};
StringBuilder messageId = new StringBuilder(128);

TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, string json_param, string user_data)=>{
// Async message sending result
});
// The message ID messageId returned when the message is sent
}